Bibliographies thématiques / Benzylic derivatives

Littérature scientifique sur le sujet « Benzylic derivatives »

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Publié le 8 juin 2024

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Articles de revues sur le sujet "Benzylic derivatives"

Loska, Rafał, Mieczysław Mąkosza et Kacper Kisiel. « Synthesis of Aryloxiranes and Arylcyclopropanes via Deprotonation of Benzyl Chlorides ». Synthesis 54, n^o 09 (21 février 2022) : 2289–97. http://dx.doi.org/10.1055/s-0040-1719895.

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AbstractUpon the action of strong bases at low temperature, benzyl chloride and its ring-substituted derivatives undergo deprotonation at the benzylic position and the produced carbanions react with aldehydes, ketones and Michael acceptors to form aryl oxiranes and cyclopropanes.

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Khan, Ajmir, Mohammed G. Sarwar et Sher Ali. « Reactivity and Stability of (Hetero)Benzylic Alkenes via the Wittig Olefination Reaction ». Molecules 29, n^o 2 (19 janvier 2024) : 501. http://dx.doi.org/10.3390/molecules29020501.

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Wittig olefination at hetero-benzylic positions for electron-deficient and electron-rich heterocycles has been studied. The electronic effects of some commonly used protective groups associated with the N-heterocycles were also investigated for alkenes obtained in the context of the widely employed Wittig olefination reaction. It was observed that hetero-benzylic positions of the pyridine, thiophene and furan derivatives were stable after Wittig olefination. Similarly, electron-withdrawing groups (EWGs) attached to N-heterocycles (indole and pyrrole derivatives) directly enhanced the stability of the benzylic position during and after Wittig olefination, resulting in the formation of stable alkenes. Conversely, electron-donating group (EDG)-associated N-heterocycles boosted the reactivity of benzylic alkene, leading to lower yields or decomposition of the olefination products.

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Bi, Xian-Jun, Luke T. Higham, Janet L. Scott et Christopher R. Strauss. « Reactions of 2,6-Dibenzylidenecyclohexanone and its Derivatives in High-Temperature Water ». Australian Journal of Chemistry 59, n^o 12 (2006) : 883. http://dx.doi.org/10.1071/ch06381.

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The reactivity of derivatives of 2,6-dibenzylidenecyclohexanone was investigated in water at 220–250°C under microwave conditions, without added catalyst. Retro-Claisen–Schmidt processes predominated. Hydrolytic attack at the benzylic position afforded a 2-benzylidenecyclohexanone derivative and liberated an aryl aldehyde. Dienones substituted with electron-withdrawing or -donating groups on the aryl rings were more susceptible to hydrolysis than was the parent 2,6-dibenzylidenecyclohexanone.

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Kikuchi, Jun, Shota Kodama et Masahiro Terada. « Radical addition reaction between chromenols and toluene derivatives initiated by Brønsted acid catalyst under light irradiation ». Organic Chemistry Frontiers 8, n^o 15 (2021) : 4153–59. http://dx.doi.org/10.1039/d1qo00657f.

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A Brønsted acid-catalyzed radical addition reaction between chromenols and toluene derivatives was accomplished under light irradiation, affording benzylated chromene derivatives through benzylic C(sp³)–H functionalization of toluene derivatives.

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Patil, Pravin, et Frederick Luzzio. « Unnatural Amino Acid Derivatives through Click Chemistry : Synthesis of Triazolylalanine Analogues ». Synlett 28, n^o 14 (24 juillet 2017) : 1729–32. http://dx.doi.org/10.1055/s-0036-1588510.

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A novel tert-butyl 2-(1-oxoisoindolin-2-yl)acetate derivative is selectively alkylated with propargyl bromide in the presence of lithium hexamethyldisilazide. After removal of the tert-butyl protecting group, the resulting N-isoindolinyl (ethynylalanine) derivative is reacted with a series of azides under ‘click conditions’. The click reactions afford an array of N-isoindolinyl- 1,2,3-triazolylalanine derivatives as the free carboxylic acids. Following esterification, the N-isoindolinone protecting group is then transformed into the more easily removable phthaloyl group by selective oxidation at the benzylic position.

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Yi, Hong, Changliang Bian, Xia Hu, Linbin Niu et Aiwen Lei. « Visible light mediated efficient oxidative benzylic sp3 C–H to ketone derivatives obtained under mild conditions using O2 ». Chemical Communications 51, n^o 74 (2015) : 14046–49. http://dx.doi.org/10.1039/c5cc06015j.

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A photooxygenation of benzylic sp³ C–H reaction has been demonstrated using O₂ mediated by visible light. Various benzylic sp³ C–H bonds can be transformed into the desired ketone derivatives in moderate to good yields.

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Ellwart, Mario, Georg Höfner, Aaron Gerwien, Klaus Wanner et Paul Knochel. « Synthesis and Bioactivity of Novel N-Benzylic and N-Phenethylic Ephedrine Derivatives ». Synthesis 49, n^o 23 (23 août 2017) : 5159–66. http://dx.doi.org/10.1055/s-0036-1588523.

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A range of N-benzylic and N-phenethylic ephedrine derivatives were prepared in a one-pot procedure starting from the two enantiomers of ephedrine using the Potier reagent, and a polyfunctional aryl- or benzylic organozinc halide. The biological activity in indatraline MS Binding Assays addressing hDAT, hNET and hSERT was determined and discussed.

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Egami, Hiromichi, Takafumi Ide, Yuji Kawato et Yoshitaka Hamashima. « Benzylic C–H trifluoromethylation of phenol derivatives ». Chemical Communications 51, n^o 93 (2015) : 16675–78. http://dx.doi.org/10.1039/c5cc07011b.

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Phenol derivatives were trifluoromethylated using copper/Togni reagent. Reaction in DMF selectively gave benzylic trifluoromethylation products, whereas aromatic trifluoromethylation products were obtained in t-BuOH.

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Pereira, Raul, Lukas Pfeifer, Jean Fournier, Véronique Gouverneur et Ján Cvengroš. « Twisting the ethano-Tröger's base : the bisamide ». Organic & ; Biomolecular Chemistry 15, n^o 3 (2017) : 628–33. http://dx.doi.org/10.1039/c6ob02359b.

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Knochel, Paul, et Alicia Castelló-Micó. « Zincation and Magnesiation of Functionalized Silylated Cyanohydrins Using TMP-Bases ». Synthesis 50, n^o 01 (24 août 2017) : 155–69. http://dx.doi.org/10.1055/s-0036-1590887.

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Polyfunctional silylated cyanohydrins are readily magnesiated or zincated with TMPMgCl·LiCl or TMP2Zn·2MgCl2·2LiCl leading to the corresponding metallated derivatives. These Mg- or Zn-derivatives react with various electrophiles such as benzylic bromides, allylic bromides, acid chlorides, aldehydes, NCCO2Et, or MeSO2SMe. Subsequently, TBAF-deprotection provides the corresponding keto or 1,2-diketo derivatives.

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Thèses sur le sujet "Benzylic derivatives"

Bresciani, Stefano. « Stereospecific dehydroxyfluorination and the synthesis of trifluoro D-hexose sugar analogues ». Thesis, University of St Andrews, 2011. http://hdl.handle.net/10023/1878.

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This thesis describes stereospecific fluorination reactions, and addresses the synthesis of fluorosugars. In Chapter 1, the influence of fluorine on the physical properties of organic molecules, as well as its stereoelectronic effects, are introduced. Furthermore, an overview of nucleophilic and electrophilic fluorination reactions is given. Chapter 2 describes the dehydroxyfluorination of allylic alcohol diastereoisomers 155a and 155b, which can proceed either by direct or allylic fluorination. The regio- and stereo- selectivities were also assessed. Chapter 3 outlines the synthesis of the novel trifluoro D-glucose analogue 193 and trifluoro D-altrose analogue 216. The transport of these hexose analogues across the red blood cell membranes was then explored, to investigate the influence of polarity versus hydrogen bonding ability in carbohydrate-protein interactions. Chapter 4 describes the development and optimisation of Bio’s methodology, to promote stereospecific dehydroxyfluorination of benzylic alcohols (R)-213 and (R)-227 by addition of TMS-amine additives 226 and 229. And finally Chapter 5 reports the experimental procedures as well as the characterisation and the crystallographic data of the molecules prepared in this thesis.

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Pierret, Alexandre. « Fonctionnalisation à distance par métallotropie de dérivés benzyliques ». Electronic Thesis or Diss., Université de Lorraine, 2023. https://docnum.univ-lorraine.fr/ulprive/DDOC_T_2023_0032_PIERRET.pdf.

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Cette thèse présente un développement de la réaction de fonctionnalisation à distance par réarrangement métallotropique sur des dérivés benzyliques. Le travail repose sur l’utilisation d’un unique réactif métallique, un triorganozincate de lithium, lequel permet la formation de deux liaisons C(sp3)-C(sp2) et C(sp3)-C(sp3) sur des sites distants de 5 atomes en une seule opération. Le premier chapitre se focalise sur les dérivés benzyliques iodés en position 4 du cycle aromatique. Des conditions réactionnelles inédites basées sur l’utilisation d’un solvant biosourcé sont proposées. Elles permettent d’atteindre une portée synthétique sans précédent pour une telle réaction à partir de ces substrats. L’influence du solvant est discutée. Le deuxième chapitre est consacré à l’étude mécanistique par DFT de chacune des étapes composant la séquence réactionnelle étudiée précédemment. Ainsi, l’échange halogène/métal, la migration-1,2 de ligand ou encore le réarrangement métallotropique sont investigués avec prise en compte minutieuse du solvant de prédilection de la réaction. Un apport expérimental vient compléter cette étude. Enfin, l’extension de cette transformation aux dérivés hétéroaromatiques benzyliques, en particulier les thiophènes, est l’objet de l’ultime chapitre de cette thèse. Les travaux rapportés définissent une approche de fonctionnalisation à distance où une même boîte à outils, composée d’une plateforme unique (thiophène halogéné porteur d’un phosphate benzylique) et d’un réactif organométallique de même nature (organozincate de lithium), offre plusieurs opportunités synthétiques selon les désirs de l’expérimentateur
This thesis presents a development of the remote functionalization reaction by metallotropic rearrangement on benzyl derivatives. The work is based on the use of a single metal reagent, a lithium triorganozincate, which allows the formation of two bonds C(sp3)-C(sp2) and C(sp3)-C(sp3) on sites 5 atoms apart in a single operation. The first chapter focuses on benzyl derivatives with an iodine in position 4 of the aromatic ring. Novel reaction conditions based on the use of a bio-based solvent are proposed. They allow to reach an unprecedented synthetic scope for such a reaction from these substrates. The influence of the solvent is also discussed. The second chapter is devoted to the mechanistic study by DFT of each step composing the reaction sequence studied previously. Thus, the halogen/metal exchange, the 1,2-migration of ligand or the metallotropic rearrangement are investigated with careful consideration of the solvent of the reaction. An experimental contribution completes this study. Finally, the extension of this transformation to benzylic heteroaromatic derivatives, in particular thiophenes, is the subject of the last chapter of this thesis. The reported work defines an approach of remote functionalization where a same toolbox, composed of a unique platform (halogenated thiophene bearing a benzyl phosphate) and an organometallic reagent of the same nature (lithium organozincate), offers several synthetic opportunities according to the experimenter's desires

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Jaafar, Amani. « Synthèse, Caractérisation et Activité biologique des complexes à base de thiosemicarbazone ». Thesis, Angers, 2017. http://www.theses.fr/2017ANGE0011/document.

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Le thiosemicarbazide et le 4-méthylthiosemicarbazide réagissent par condensation avec des dérivés benzaldéhyde pour donner des produits de type thiosemicarbazone pouvant jouer le rôle de ligands.Ces derniers peuvent conduire en milieu éthanolique à la formation de divers complexes en réagissant avec des sels métalliques comme les chlorures et/ou bromures de cuivre(II), de nickel(II), de zinc(II), de cobalt(II) et de cadmium(II). La structure de ces ligands et de leurs complexes a été déterminée par spectroscopie infrarouge, par des analyses élémentaires et par cristallographie. Les ligands se présentent tous sous forme thione à l’état solide tandis que les complexes obtenus peuvent revêtir différents états : soit monodentés, mononucléaire ou polynucléaire à deux atomes de soufre provenant du groupement thiosemicarbazone, comme l’étude cristallographique a pu le démontrer, soit bidentés avec des sites decoordination dont l’azote provenant du groupement imine et le soufre du groupement thiol. Les propriétés antifongiques de ces divers composés ont été testées vis-à-vis de champignons pathogènes de l’homme comme Aspergillus fumigatus, Candida albicans, C. glabrata, C. tropicalis, C. krusei, C. parapsilosis et Exophiala dermatitidis. Seuls les complexes avec le cadmium ont montré des activités antifongiques significatives et le ligand de pdiméthylaminobenzaldéhyde thiosemicarbazone a inhibé presque totalement la croissance d’E. dermatitidis
Thiosemicarbazide and 4-methylthiosemicarbazide react with benzaldehyde derivatives by condensation to give different thiosemicarbazone ligands. The latter conduct in ethanolic medium to various complexes by reacting with chlorides and / or bromidesof copper (II), nickel (II), zinc (II), cobalt (II) and cadmium (II). The structures of the ligands and their complexes have been determined mainly by crystallography and by infrared spectroscopy, as well as by elementary analyzes. The ligands are in thion form in solid form.The complexes obtained are either monodentate, mononuclear or polynuclear complexes with two sulfur atoms of the thiosemicarbazone group, such as the determination of the crystal structure has shown either bidentate complexes with coordination sites, imine nitrogen and sulfur of the thio group. Their antifungal properties have been tested against human pathogenic strains: Aspergillus fumigatus, Candida albicans, C. glabrata, C. tropicalis, C. krusei, C. parapsilosis and Exophiala dermatitidis. Only thecomplexes with cadmium exhibited significant activities against the fungal species studied and the thiosemicarbazone of p-dimethylaminobenzaldehyde ligand almost completely inhibited the growth of E. dermatitidis

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Lenihan, Brian David. « Generation of o-quinodimethanes from derivatives of trimethyl (o- ((p-tolylsulfonyl)methyl)benzyl)silane : a synthetic equivalent for the o-quinodimethant-[alpha], [alpha]- / ». The Ohio State University, 1992. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487780393267272.

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Abou-Elkhair, Reham A. I. « Synthesis of anthraquinone derivatives and their conjugates with 2'-deoxynucleosides as new probes for electron transfer studies in DNA ». unrestricted, 2008. http://etd.gsu.edu/theses/available/etd-07182008-154942/.

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Thesis (Ph. D.)--Georgia State University, 2008.
Title from file title page. Thomas L. Netzel, Dabney W. Dixon, committee co-chairs; David Boykin, Jerry Smith, committee members. Electronic text (250 p. : ill. (some col.)) : digital, PDF file. Description based on contents viewed Nov. 20, 2008. Includes bibliographical references.

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Pham, Van Tuyet. « The synthesis and reactions of chiral 1,3,2-oxazaphospholane derivations : kinetic and mechanistic studies of polyether omega-phase catalyzed reactions of potassium cyanide with benzyl bromide in non-polar, aprotic solvent toluene ». Diss., Georgia Institute of Technology, 1987. http://hdl.handle.net/1853/27416.

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Metzger, Albrecht [Verfasser]. « Preparation and applications of benzylic zinc chlorides : lewis-acid promoted additions of organomagnesium and organozinc reagents to carbonyl derivatives ; transition metal-catalyzed cross-coupling reactions with methylthio-substituted N-heterocycles / von Albrecht Metzger ». 2010. http://d-nb.info/1003615341/34.

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Chang, Ren-Chieh, et 張仁傑. « Design and Synthesis of Benzyl Caffeate Derivatives as JAK2 Inhibitors ». Thesis, 2011. http://ndltd.ncl.edu.tw/handle/96461041056529506594.

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碩士
國立陽明大學
生物藥學研究所
99
JAK (Janus kinase) is a cytokine-induced kinase that activates STAT (Signal Transducer and Activator of Transcription) on many kinds of physiological effect such as cell proliferation, differentiation, and angiogenesis. Literature has been shown that over-activated JAK2/STAT3 pathway leads to highly transcription of oncogenes in various cancers, including solid tumor (e.g., liver, breast) as well as hematological malignancies. A series of JAK2 inhibitors have been developed and some of the inhibitors have been tested in clinical trial. Therefore, development of small molecule inhibitors for JAK2 is a promising strategy in cancer therapy. In this thesis, we applied the caffeate scaffold and X-ray structure of JAK2 to design and synthesize caffeate analogues. The inhibitory effect IC50 of these compounds was examined in HCC cell line. The MTT result shows that 6-bromopyridine in R2 position and hydrophobic ring (e.g., naphthalene) in R1 position enhances potency in cell cyto-toxicity. The structure-activity relationship provides the hints to develop new potent inhibitors.

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Lo, mei ting, et 羅美婷. « Apoptosis induced by 1-benzyl carbazole-4-carboxaldehyde derivatives in human leukemia cell lines ». Thesis, 2001. http://ndltd.ncl.edu.tw/handle/90007866802222515218.

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碩士
中國醫藥學院
藥物化學研究所
89
Abstract Synthesized 1-benzyl carbazole-4-carboxaldehyde derivatives ( LCY ) examined for their growth inhibition effects in human leukemia cell lines. HL60, U937, and K562 cells were treated with these compounds for 24 hours and their proliferation was determined by the propidium iodide DNA staining method. A dose-dependent decrease in the cell proliferation rate was observed for all compounds. LCY-12 had the highest growth inhibitory, and its IC50 were 2.58, 0.77, and 19.49 μM for HL60, U937, and K562 cells, respectively. DAPI-stained cells revealed evident characteristics of apoptosis, which include cell shrinking, chromatin condensation, fragmentation of nuclei, and formation of apoptotic bodies. DNA from treated HL60 and U937 cells displayed a characteristic inter-nucleosomal ladder of DNA fragments. Furthermore, down-regulation of Bcl-2, up-regulation of Bax, activation of caspase 3, 8, and 9, and cleavage of PARP were detected by Western blotting method in LCY-12-treated HL60 cells. Caspase inhibitors significantly reduced LCY-12-induced caspase activity and cell death. In addition, LCY-12 and LCY-16 induced G2/M arrest in HL60 cells, and S arrest in U937 cells. The induction of cell cycle arrest occurred before the onset of apoptosis. Western blotting analysis of cyclins and CKIs revealed that LCY-12 induced the expression of cyclin B, cdc25c and p21 proteins. These results indicated that the ability of LCY-12 to inhibit cell proliferation may be mediated by the induction of apoptosis and cell cycle arrest.

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Huang, Chun-Lung, et 黃俊龍. « Synthesis and biological activity of 1-benzyl-4-hydroxy-3-phenylquinolin-2(1H)-one derivatives ». Thesis, 2006. http://ndltd.ncl.edu.tw/handle/37426286995940238871.

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碩士
中國醫藥大學
藥物化學研究所碩士班
94
The dissertation is based on the structure of 4-hydroxy- quinolin-2-(1H)-ones. In order to synthesize a series of derivatives of 1-benzyl-4-hydroxy-3-phenylquinolin-2(1H)-one (26a-g, 27a-g, 28, 29), Using the Bheemashankar′s solution-phase combinatorial synthetic method. The starting material is methyl anthranilate (16) that is condensated with 4-substituted-benzaldehydes 17a-h to obtain the 19a-h. On the other hand, 4-cyanophenyl acetic acids 20a-d were acylated with thionyl chloride to afford acid chlorides 21a-d. Then, 21a-d and 19a-h are combined by Schotten-Baumann reaction to give 22a-h, 23a-h, 24 and 25, respectively. The last, intermediate 22a-h, 23a-h, 24, 25 are cyclizated by amberlyst A-26 resin (OH- form) and then acidified with trifluroacetic acid to obtain 26a-g, 27a-g, 28 and 29, respectively. Moreover, it is important to evaluate the biological activity from the derivatives, anticipating obtaining leading compounds to establish the structure-activity relationships.

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Chapitres de livres sur le sujet "Benzylic derivatives"

Delmau, Lætitia H., Jeffrey C. Bryan, Benjamin P. Hay, Nancy L. Engle, Richard A. Sachleben et Bruce A. Moyer. « Benzyl Phenol Derivatives : Extraction Properties of Calixarene Fragments ». Dans ACS Symposium Series, 86–106. Washington, DC : American Chemical Society, 2000. http://dx.doi.org/10.1021/bk-2000-0757.ch007.

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Krause, Eberhard, Michael Beyermann, Rüdiger Winter, R. Haseloff, Ingolf E. Blasig et Michael Bienert. « Studies on thioether modifications : S-oxidation, S-oxide reduction and regeneration of methionine peptides from their S-benzyl-sulfonium derivatives ». Dans Peptides, 478–79. Dordrecht : Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-011-2264-1_184.

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Lv, Jian, Lei Lv, Xiaomin Zhang, Yao Zhou, Kui Lu, Yifei lu, Yuou Teng, Hua Sun et Peng Yu. « Design, Synthesis and Biological Evaluation of the Novel Antitumor Agent 2-benzyl-3, 4-dihydroisoquinolin-1(2H)-one and Its Derivatives ». Dans Proceedings of the 2012 International Conference on Applied Biotechnology (ICAB 2012), 797–804. Berlin, Heidelberg : Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-37922-2_83.

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Andrus, M. B. « Oxidation To Afford Benzylic Alcohols and Derivatives ». Dans Stereoselective Pericyclic Reactions, Cross Coupling, and C—H and C—X Activation, 1. Georg Thieme Verlag KG, 2011. http://dx.doi.org/10.1055/sos-sd-203-00302.

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Davies, H. M. L., et D. Morton. « Synthesis of Carbocyclic Derivatives by Benzylic C—H Bond Insertion ». Dans Stereoselective Pericyclic Reactions, Cross Coupling, and C—H and C—X Activation, 1. Georg Thieme Verlag KG, 2011. http://dx.doi.org/10.1055/sos-sd-203-00340.

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« Synthesis by Oxidation of Alkenes and Alkanes (Excluding Allylic or Benzylic Derivatives) ». Dans Category 4, Compounds with Two Carbon Heteroatom Bonds, sous la direction de Cossy. Stuttgart : Georg Thieme Verlag, 2005. http://dx.doi.org/10.1055/sos-sd-026-00062.

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« 2.4 Hydrogenolysis of Aryl Ketones and Aldehydes, Benzylic Alcohols and Amines, and Their Derivatives ». Dans Catalytic Reduction in Organic Synthesis 2, sous la direction de de Vries. Stuttgart : Georg Thieme Verlag, 2018. http://dx.doi.org/10.1055/sos-sd-227-00073.

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« Use of Transition Metals and Enzymes in Tandem ». Dans Chirality from Dynamic Kinetic Resolution, 191–242. The Royal Society of Chemistry, 2011. http://dx.doi.org/10.1039/bk9781849731973-00191.

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This chapter deals with the use of transition metals and enzymes in tandem for achieving DKR. This powerful concept has widely extended the scope of DKRs. Three major types of enzyme-metal combinations, lipase-ruthenium, subtilisin-ruthenium, and lipase combined with a metal other than ruthenium, have been developed as the catalysts for the DKRs of various secondary alcohols but also for diols, amines, and esters. Meanwhile, the lipase-ruthenium combination has been the most used method so far. In the case of DKR of alcohols, complementary catalyst systems are now available for the synthesis of both (R)- and (S)-esters. Thus, (R)-esters can be obtained by the combination of an R-selective lipase, such as CAL-B or LPS, and a racemisation catalyst, whereas the use of an S-selective protease, such as subtilisin, provides (S)-esters. The DKR of alcohols can be achieved not only for simple alcohols but also for those bearing various additional functional groups. The DKR of alcohols has also been applied to the synthesis of chiral polymers and coupled to tandem reactions, producing various polycyclic compounds. Today, a number of robust, reusable racemisation catalysts are available, which are stable even under aerobic conditions. Palladium nanoparticles embedded on various supports are common catalysts for amine racemisation, although there are some other catalysts, such as Raney nickel and Shvo-type ruthenium complexes. The DKR of amines is possible for aliphatic amines as well as for benzylic ones. Moreover, the DKR of amino acid derivatives has also been successfully developed.

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Jilal, Issam, Soufian El Barkany, Zahra Bahari, Youssef El Ouardi, Mohamed Loutou, Hassan Amhamdi, Mohamed Abou-Salama, Amin Salhi, Abderrahmane El Idrissi et Katri Laatikainen. « New Ethylenediamine Crosslinked 2D-Cellulose Adsorbent for Nanoencapsulation Removal of Pb (II) and Cu (II) Heavy Metal Ions : Synthesis, Characterization Application, and RSM-Modeling ». Dans Cellulose Science and Derivatives. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.98709.

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The main objective of the present work is to elaborate on a new eco-friendly and efficient adsorbent designated for aquatic micropollutants removal. However, the synthesis of the Ethylenediamine Crosslinked 2D-Cellulose green adsorbent was carried out successfully, by partial grafting of benzyl entities onto hydroxyl groups of HEC, and crosslinking with ethylenediamine ED. Further, the new ethylenediamine crosslinked 2D-Cellulose was used as a biosorbent for nanoencapsulation removal of copper and lead heavy metal ions from aqueous solutions. The proposal chemical structures of unmodified and modified materials were confirmed using FTIR, XRD, TGA, and SEM–EDX analysis. Furthermore, many parameters of the optimization for Pb (II) and Cu (II) in terms of removal efficiency including pH, adsorbent amount, and contact time were optimized by response surface methodology with a Box–Behnken design. Based on the desirability optimization with three factors, the maximal removal was 99.52% and 97.5% for Pb(II) and Cu(II), respectively and was obtained at pH = 5.94, 22.2 mg as the optimal adsorbent amount, and 21.53 min as contact time.

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Ihmels, H. « Cyclization of 1-Benzyl-2-formylpyridinium Derivatives ». Dans Six-Membered Hetarenes with One Nitrogen or Phosphorus Atom, 1. Georg Thieme Verlag KG, 2005. http://dx.doi.org/10.1055/sos-sd-015-01589.

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Actes de conférences sur le sujet "Benzylic derivatives"

Thiemann, Thies, Goreti Morais et Cristina das Neves Oliveira. « Application of the Thermal Dehydration of Benzylic Alcohols in the Preparation of Estra-1,3,5(10),6-tetraen-3,17-diol Derivatives ». Dans The 9th International Electronic Conference on Synthetic Organic Chemistry. Basel, Switzerland : MDPI, 2005. http://dx.doi.org/10.3390/ecsoc-9-01491.

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Miller, Terry A. « Laser spectroscopy of aromatic and organometallic radicals ». Dans OSA Annual Meeting. Washington, D.C. : Optica Publishing Group, 1992. http://dx.doi.org/10.1364/oam.1992.thi1.

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Laser induced fluorescence techniques can be used to obtain rotationally resolved electronic spectra of moderately large aromatic and organometallic radicals cooled to <2 K in a supersonic free jet expansion. Aromatic organic radicals studied include cyclopentadienyl, benzyl, triphenyl methyl, and substituted derivatives thereof. Organometallic radicals studied include Cd and Zn monomethyl as well as group IIA and IIB derivatives of cyclopentadienyl, methylcyclopentadienyl, and pyrrolyl radicals.

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Salimova, E. V., E. V. Tretyakova et L. V. Parfenova. « Fischer reaction in the synthesis of indole derivatives of fusidic acid benzyl ester ». Dans ACTUAL PROBLEMS OF ORGANIC CHEMISTRY AND BIOTECHNOLOGY (OCBT2020) : Proceedings of the International Scientific Conference. AIP Publishing, 2022. http://dx.doi.org/10.1063/5.0069131.

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El Rayes, Samir, Ibrahim Ali, hamdy Abd Elazeem et Sara Eltorky. « Convenient Synthesis of Some Novel 4-Benzyl-1(2H)-Phthalazinone Derivatives of expected anticancer activity ». Dans The 23rd International Electronic Conference on Synthetic Organic Chemistry. Basel, Switzerland : MDPI, 2019. http://dx.doi.org/10.3390/ecsoc-23-06605.

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Zieniuk, Bartłomiej, Karina Jasińska, Katarzyna Wierzchowska et Agata Fabiszewska. « Enzymatic Synthesis of Flavours and Fragrances, Antioxidants and Antimicrobials on the Example of Benzyl Alcohol and Its Selected Derivatives ». Dans Foods 2022. Basel Switzerland : MDPI, 2022. http://dx.doi.org/10.3390/foods2022-13066.

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Dexheimer, Thomas S., Andrew S. Rosenthal, Diane Luci, Qin Liang, Mark A. Villamil, Ajit Jadhav, Anton Simeonov, Zhihao Zhuang et David J. Maloney. « Abstract LB-11 : Discovery, synthesis, and structure-activity relationship of N-benzyl-2-phenylpyrimidin-4-amine derivatives as potent USP1/UAF1 deubiquitinase inhibitors with anticancer activity against non-small cell lung cancer ». Dans Proceedings : AACR Annual Meeting 2014 ; April 5-9, 2014 ; San Diego, CA. American Association for Cancer Research, 2014. http://dx.doi.org/10.1158/1538-7445.am2014-lb-11.

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Zarins, Elmars, Julija Pervenecka, Elina Misina, Kristine Lazdovica, Karlis Balodis, Aivars Vembris et Valdis Kokars. « Glassy 2-(1-benzyl-2-styryl-6-methylpyridin-4(1H)-ylidene) fragment containing 1H-indene-1,3(2H)-dione and pyrimidine-2,4,6(1H,3H,5H)-trione derivatives with light-emitting and amplified spontaneous emission properties ». Dans Fiber Lasers and Glass Photonics : Materials through Applications II, sous la direction de Stefano Taccheo, Maurizio Ferrari et Jacob I. Mackenzie. SPIE, 2020. http://dx.doi.org/10.1117/12.2553687.

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