Relevant bibliographies by topics / Bicyclo (2. 2. 1) heptene-2(ethylidene-5)

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  2. Dissertations / Theses
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Academic literature on the topic 'Bicyclo (2. 2. 1) heptene-2(ethylidene-5)'

Author: Grafiati
Published: 12 July 2021
Last updated: 8 February 2022

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Journal articles on the topic "Bicyclo (2. 2. 1) heptene-2(ethylidene-5)"

1

Werstiuk, N. H., S. Yeroushalmi, and Hong Guan-Lin. "Synthesis of bicyclic diones and thiones. Facile methylation of the enolates of bicyclo[2.2.1]heptane-2,5-dione and bicyclo[2.2.2]octane-2,5-dione. An AM1 computational study of bicyclic enolates." Canadian Journal of Chemistry 70, no. 3 (March 1, 1992): 974–80. http://dx.doi.org/10.1139/v92-130.

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A group of bicyclic ketones and thiones have been synthesized for homenolization studies. Bicyclo[2.2.1]heptane-2,5-dione (6) undergoes unusually rapid tetramethylation giving 3,3,6,6-tetramethylbicyclo[2.2.1]heptane-2,5-dione (1) in good yield. Treatment of 1 with P2S5 in xylene gave 3,3,6,6-tetramethylbicyclo[2.2.1]heptane-2,5-dithione (2) and 3,3,6,6-tetramethyl 15-oxo-bicyclo[2.2.1]heptane-2-thione (3), which was converted into 4 with Raney nickel. Bicyclo[2,2,2]octane-2,5-dione (7), prepared via a Diels–Alder reaction between 2-trimethylsilyloxy-1,3-cyclohexadiene and and α-acetoxyacrylonitrile followed by a one-step desilylation/hydrolysis, also undergoes facile tetramethylation giving 3,3,6,6-tetramethylbicyclo[2.2.2]octane-2,5-dione (5) in good yield. AM1 calculations were carried out on the α-enolates of bicyclo[2.2.1]heptan-2-one, 6, 5-methylidenebicyclo[2.2.1]heptan-2-one, and 4-acetylbicyclo[2.2.1]-heptan-2-one in an attempt to gain information on the source of the enhanced acidity of the C-3 hydrogens of 6 and 7. Keywords: bicyclic ketones, thiones, synthesis.
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Nielsen, P., and F. Tarding. "The Metabolic Fate of 5-(bicyclo-3, 2, 1-oct-2-en-2-yl)-5-ethyl Barbituric Acid, (Reposal ®)." Acta Pharmacologica et Toxicologica 26, no. 6 (March 13, 2009): 521–30. http://dx.doi.org/10.1111/j.1600-0773.1968.tb00471.x.

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Ahlenstiel, Eckart, Wolfgang Kliegel, Steven J. Rettig, and James Trotter. "Structural studies of organoboron compounds. LVII. Synthesis and structure of bicyclic boron-nitrogen betaines. 1-Methyl-5-(3-nitrophenyl)-4,6,9-trioxa-1-azonia-5-boratabicyclo[3.3.1]nonane and 3,3,4-trimethyl-1-(3-nitrophenyl)-2,6,7-trioxa-3-azonia-1-boratabicyclo[2.2.2]octane." Canadian Journal of Chemistry 71, no. 2 (February 1, 1993): 263–71. http://dx.doi.org/10.1139/v93-038.

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The syntheses and structures of the bicyclic boron-nitrogen betaines 1-methyl-5-(3-nitrophenyl)-4,6,9-trioxa-1-azonia-5-boratabicyclo[3.3.1]nonane, 7a, and 3,3,4-trimethyl-1-(3-nitrophenyl)-2,6,7-trioxa-3-azonia-1-boratabicyclo[2.2.2]-octane, 14a, are reported. Crystals of 7a are orthorhombic, a = 20.256(2), b = 37.652(2), c = 6.642(1) Å, Z = 16, space group Fdd2, and those of 14a are orthorhombic, a = 21.402(2), b = 11.334(3), c = 11.248(2) Å, Z = 8, space group Pbca. The structures were solved by direct methods and were refined by full-matrix least-squares procedures to R = 0.038 and 0.045 (Rw = 0.036 and 0.053) for 975 and 1646 reflections with I ≥ 3σ(F2), respectively. The X-ray analyses establish the bicyclo[3.3.1]nonane and bicyclo[2.2.2]octane "cage" structures for 7a and 14a, respectively. Bond lengths involving the tetrahedral boron atom are (N)O—B = 1.519(5), (C)O—B = 1.444(6) and 1.443(6), C(aryl)—B = 1.602(5) Å for 7a; and (N)O—B = 1.530(3), (C)O—B = 1.446(3) and 1.455(3), C(aryl)—B = 1.608(3) Å for 14a. Weak [Formula: see text] interactions are the main feature of the crystal packing arrangements of both compounds.
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Gavina, Francisco, Ana M. Costero, Ana M. Gonzalez, and Santiago V. Luis. "Existence and reactivity of bicyclic annulenones. 2. Bicyclo[3.3.0]octa-1(5),3,7-triene-2,6-dione." Journal of Organic Chemistry 52, no. 14 (July 1987): 2997–99. http://dx.doi.org/10.1021/jo00390a009.

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Yang, Ying-Qun, Wei Li, Zhi-Min Chen, and Li-Xia Fu. "Crystal Structure and Properties of a New Copper(II) Complex Cu2(phen)2[C7H8(COO)2]2 (H2O)4:5." Zeitschrift für Naturforschung B 67, no. 9 (September 1, 2012): 872–76. http://dx.doi.org/10.5560/znb.2012-0097.

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A new complex Cu2(phen)2[C7H8(COO)2]2 (H2O)4:5 (1) has been synthesized, with the dianion of bicyclo[2.2.1] hept-2-ene-5,6-dicarboxylic acid [C7H8(COOH)2] (LH2) and 1,10-phenanthroline (phen) as ligands. In 1, L2- anions link Cu(II) cations to form two binuclear structure units, in which each Cu(II) cation is coordinated by five donor atoms to give a distorted square-pyramidal geometry. The magnetic data of 1 show that it exhibits weak antiferromagnetic properties at low temperature. When the excitation wavelength is at 470 nm, it has an intense photoluminescence. In addition, the cyclovoltammetric electron transfer is quasi reversible in the electrode reaction of 1, two electrons being involved in the reaction corresponding to Cu(II)=Cu(0)
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Akabane-Nakata, Masaaki, Namrata D. Erande, Pawan Kumar, Rohan Degaonkar, Jason A. Gilbert, June Qin, Martha Mendez, et al. "siRNAs containing 2′-fluorinated Northern-methanocarbacyclic (2′-F-NMC) nucleotides: in vitro and in vivo RNAi activity and inability of mitochondrial polymerases to incorporate 2′-F-NMC NTPs." Nucleic Acids Research 49, no. 5 (February 12, 2021): 2435–49. http://dx.doi.org/10.1093/nar/gkab050.

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Abstract We recently reported the synthesis of 2′-fluorinated Northern-methanocarbacyclic (2′-F-NMC) nucleotides, which are based on a bicyclo[3.1.0]hexane scaffold. Here, we analyzed RNAi-mediated gene silencing activity in cell culture and demonstrated that a single incorporation of 2′-F-NMC within the guide or passenger strand of the tri-N-acetylgalactosamine-conjugated siRNA targeting mouse Ttr was generally well tolerated. Exceptions were incorporation of 2′-F-NMC into the guide strand at positions 1 and 2, which resulted in a loss of the in vitro activity. Activity at position 1 was recovered when the guide strand was modified with a 5′ phosphate, suggesting that the 2′-F-NMC is a poor substrate for 5′ kinases. In mice, the 2′-F-NMC-modified siRNAs had comparable RNAi potencies to the parent siRNA. 2′-F-NMC residues in the guide seed region position 7 and at positions 10, 11 and 12 were well tolerated. Surprisingly, when the 5′-phosphate mimic 5′-(E)-vinylphosphonate was attached to the 2′-F-NMC at the position 1 of the guide strand, activity was considerably reduced. The steric constraints of the bicyclic 2′-F-NMC may impair formation of hydrogen-bonding interactions between the vinylphosphonate and the MID domain of Ago2. Molecular modeling studies explain the position- and conformation-dependent RNAi-mediated gene silencing activity of 2′-F-NMC. Finally, the 5′-triphosphate of 2′-F-NMC is not a substrate for mitochondrial RNA and DNA polymerases, indicating that metabolites should not be toxic.
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Koch, Ernst-Christian, and Guido J. Reiss. "Photochemisch induzierte C–C-Verknüpfungen zwischen einem Mangan-koordinierten Pentadienylliganden und Acetylen." Zeitschrift für Naturforschung B 70, no. 2 (February 1, 2015): 143–50. http://dx.doi.org/10.1515/znb-2014-0227.

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AbstractIrradiation of tricarbonyl(η5-2,4-dimethyl-2,4-pentadien-1-yl)manganese (1) in tetrahydrofuran (THF) at 208 K affords the carmine solvent complex dicarbonyl(η5-2,4-dimethyl-2,4-pentadien-1-yl)(THF)manganese (2). Complex 2 thermally reacts with acetylene (3) to give tricarbonyl(η3:2-1,3-dimethyl-bicyclo[3.3.1]-3,6-nonadien-2-yl)manganese (4) and dicarbonyl(5-7,10-13-η-6,8-dimethyl-1,3,5,8,10,12-tridecahexaen-5-yl)manganese (5). The crystal structure of complex 4 was determined at room temperature [triclinic space group $P\bar 1,$a=7.6891(9), b=8.3860(8), c=10.5252(13) Å, α=93.000(9)°, β=93.390(10)°, γ= 108.032(8)°, V=642.43(13) Å3]. The manganese atom is trigonal-bipyramidally coordinated by three carbonyl ligands, one ethenylic and one allylic fragment. Consequently, the bicyclic olefin ligand 1,3-dimethyl-bicyclo[3.3.1]-3,6-nonadiene coordinates the manganese atom in a η3:2 mode. The constitution of complex 5 was deduced from IR data, elemental analysis, and 1H NMR spectra. For the formation of complexes 4 and 5, a reaction mechanism is proposed.
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Zhang, Dang Quan, Huai Yun Zhang, Lin Lin Guo, and Kuan Peng. "Determination of Bioactive Components of Acetone Extractives of Cinnamomum camphora Root Wood by Py-GC/MS under 350°C." Advanced Materials Research 230-232 (May 2011): 837–41. http://dx.doi.org/10.4028/www.scientific.net/amr.230-232.837.

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Py-GC/MS technology was used to analyze the high-grade resource recovering approaches of C. camphora root wood at 350°C. The result showed that the chemical components of acetone extractives from C. camphora root wood are as: Benzene, 1,2-dimethoxy-4-(2-propenyl)- (10.255%), Bicyclo[2.2.1]heptan-2-one, 1,7,7-trimethyl-, (1R)- (7.751%), p-menth-1-en-8-ol (5.765%), Phenol, 2,6-dimethoxy-4-(2-propenyl)- (3.833%), 1,6-Cyclodecadiene, 1-methyl-5-methylene-8- (1-methylethyl)-, [s-(E,E)]- (3.669%), D-Allose (3.265%), Acetic acid (2.784%), 1(2H)-Naphthalenone, octahydro-8a-hydroxy- (2.719%), 1,3-Benzodioxole, 4-methoxy-6- (2-propenyl)- (2.674%), .beta.(3,4-Methylenedioxyphenyl)propionic acid (2.216%), Phenol, 4-methyl- (2.200%), Phenol, 2,6-dimethoxy- (2.138%), 3,4-Methylenedioxyphenyl acetone (2.125%), 5-Hepten-2-one, 6-methyl- (2.075%), 2-Oxabicyclo[2.2.2]octan-6-ol, 1,3,3-trimethyl- (1.808%), Phenol, 2-methoxy-3-(2-propenyl)- (1.688%), etc. The analytical result by 350°C-based Py-GC/MS showed that the 350°C pyrolyzate of acetone extractives from C. camphora root wood can be used as top value-added materials of biomedicine, but also used as the bioactive materials of bioenergy, cosmetic, food, and other industrial solvents.
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Fun, Hoong-Kun, Ching Kheng Quah, Chengmei Huang, and Haitao Yu. "1-Benzyl-5-methoxy-2′,3-dimethyl-4,6-dioxa-2-azaspiro[bicyclo[3.2.0]hept-2-ene-7,4′-isoquinoline]-1′,3′(2′H,4′H)-dione." Acta Crystallographica Section E Structure Reports Online 67, no. 6 (May 7, 2011): o1311—o1312. http://dx.doi.org/10.1107/s160053681101600x.

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Bourhis, Mireille, René Golse, Michel Goursolle, and Philippe Picard. "Synthesis of new norbornenones with the aminoester group methyl bicyclo [2-2-1] hept 5-ene 7-one 1-amino 2-carboxylates." Tetrahedron Letters 26, no. 29 (January 1985): 3445–48. http://dx.doi.org/10.1016/s0040-4039(00)98660-x.

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Dissertations / Theses on the topic "Bicyclo (2. 2. 1) heptene-2(ethylidene-5)"

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Chreim, Yamama. "Synthese de polymeres organosilicies par polycondensation de dienes polycycliques." Université Louis Pasteur (Strasbourg) (1971-2008), 1986. http://www.theses.fr/1986STR13134.

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Polycondensation de molecules diinsaturees, mono- ou polycycliques avec des molecules disilylees (hydrosilylation des doubles liaisons par des fonctions si-h. Les polymeres ont des masses moleculaires comprises entre 3000 et 25000. Stabilite thermique jusqu'a 450**(o)c
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LAKODEY, ALINE. "Synthese de systemes bicyclo(5. 1. 0) octeniques fonctionnalises. Thermolyses de systemes 1-carbethoxy bicyclo(5. 1. 0) oct-2-eniques." Université Louis Pasteur (Strasbourg) (1971-2008), 1992. http://www.theses.fr/1992STR13111.

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Ce memoire decrit une nouvelle synthese de systemes bicyclo(5. 1. 0) octeniques fonctionnalises au depart d'esters cycloheptadieniques eux-memes obtenus par cycloaddition (2+2) formelle de propiolate d'ethyle sur des enamines de cyclopentanone et d'indanone suivie d'une ouverture de cycle des cyclobutenes formes et d'une desamination reductive. Ces esters cycloheptadieniques reagissent avec divers diazoalcanes (2-diazo propane, diazomethane) pour conduire aux delta-1 pyrazolines correspondantes dont les traitements thermiques ou photochimiques fournissent les systemes bicyclo(5. 1. 0) octeniques attendus. L'elimination du groupe ester situe a la jonction de cycle de ces systemes bicycliques, critique a priori, a ete realisee avec succes, ce qui permet d'envisager l'application de cette nouvelle methode a la synthese de produits naturels. Par ailleurs, une nouvelle transposition cationique permettant de passer d'un systeme bicyclo(5. 1. 0) octenique a un systeme bicyclo(3. 2. 1) octenique a pu etre mise en evidence au cours de ce travail. L'action d'un exces de dioxyde de selenium sur un systeme benzobicyclo(5. 1. 0) octenique nous a egalement permis de decouvrir une nouvelle voie d'acces aux derives benzoheptafulveniques. Enfin, la thermolyse eclair des differents systeme bicyclo(5. 1. 0) octeniques nous a conduit a des migrations sigmatropiques homo(1,5) d'hydrogene plutot qu'au rearrangement des structures vinylcyclopropaniques en cyclopentenes
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Benchikh-Le-Hocine, Mohamed El Ouard. "Contribution à la synthèse totale des diterpènes tricycliques de type taxane." Paris 11, 1988. http://www.theses.fr/1988PA112177.

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L'objectif de cette thèse est de mettre au point une nouvelle méthode de synthèse de sous-structures du taxane, groupe des diterpènes dont certains possèdent des activités antileucémique et antitumorale prononcées. La première partie de ce travail décrit la préparation du triméthyl-4, 10, 10 bicyclo [5, 2, 1] décèn-3 dione-2,6, modèle simplifié comportant les cycles A et 8 convenablement fonctionnalisés. Une étude systématique del'addition photochimique [2 + 2] de l'allène sur les dicétones-1,3 et leurs dérivés, a permis de mettre en évidence l'effet du substituant sur la régiosélectivité de la réaction. Le réarrangement moléculaire (acido-catalysé ou basique) de ces adduits photochimiques conduit à la formation du triméthyl-4, 10, 10 bicyclo [5, 2, 1] décèn-3 dione-2,6. La deuxième partie décrit la préparation de l'hydroxy-2 triméthyl-1, 4, 4 dioxalan-7 bicyclo [6,4,0]dodécadione-3,11 comportant les cycles 8 et C du squelette taxane, par une réaction de photocycloaddition [2 + 2]de l'acétoxy-1 méthyl-2 dioxal n-5 hexène. Au cours de ce travail, nous avons pu montrer la complexité des réactions de photo cyclo addition [2 + 2] et les réactions d'alkylation appliquées à des systèmes possédant des cycles à 8 chaînons.
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Zaid, Abdelhamid. "Préparation et activité pharmacologique de l'anisyl-5 triméthyl-1,9,9 oxa-3 aza-4 bicyclo [4. 2. 1] nonane et de ses dérivés amino-acylés." Montpellier 1, 1987. http://www.theses.fr/1987MON13514.

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Ferroud, Clotilde. "Étude de la réaction de Diels-Adler intra et intermoléculaire sous haute pression : application à la synthèse stéréosélective d'alcaloïdes de l'indole du groupe des yohimbanes." Paris 6, 1986. http://www.theses.fr/1986PA066023.

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Le schéma de synthèse repose sur une unité bicyclique, précurseur direct des unités (d,e) du squelette pentacyclique. Cet intermédiaire est basé sur une réaction de Diels-Alder sous haute pression, utilisant la cycloaddition de diènes de structure donneur-accepteur 1,4 avec une lactone insaturée comme diénophile. La synthèse du système pentacyclique est exposée à partir de cet intermédiaire clé.
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Yang, Ming-Shyong, and 楊明雄. "The Photochemical Competition Reactions of 1, 3, 3-trimethyl- bicyclo[2.2.2]oct-7-en-2, 5-dione Derivatives." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/61963605798314518767.

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Yang, Ming-Xiong, and 楊明雄. "The Photochemical Competition Reactions of 1, 3, 3-trimethyl- bicyclo[2.2.2]oct-7-en-2, 5-dione Derivatives." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/37206652396846371667.

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Books on the topic "Bicyclo (2. 2. 1) heptene-2(ethylidene-5)"

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Wempe, Michael F. The experimental and theoretical study of the acid catalyzed transannular rearrangement of 5-cyclodecynone to Bicyclo[4.4.0]-1(6)-decen-2-one. 1996.

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Book chapters on the topic "Bicyclo (2. 2. 1) heptene-2(ethylidene-5)"

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Moore, A. J. "Bicyclic 5-5 Systems: Three Heteroatoms 1:2." In Comprehensive Heterocyclic Chemistry III, 65–127. Elsevier, 2008. http://dx.doi.org/10.1016/b978-008044992-0.00902-0.

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Lee, Ving J. "Bicyclic 5-5 Systems: Three Heteroatoms 1:2." In Comprehensive Heterocyclic Chemistry II, 49–87. Elsevier, 1996. http://dx.doi.org/10.1016/b978-008096518-5.00146-5.

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Coyne, Anthony G. "Bicyclic 5-5 Systems: Three Heteroatoms 1:2." In Reference Module in Chemistry, Molecular Sciences and Chemical Engineering. Elsevier, 2020. http://dx.doi.org/10.1016/b978-0-12-409547-2.14914-5.

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Myers, Eddie L. "Bicyclic 5–6 Systems: Other Four Heteroatoms 2:2." In Reference Module in Chemistry, Molecular Sciences and Chemical Engineering. Elsevier, 2021. http://dx.doi.org/10.1016/b978-0-12-818655-8.00056-1.

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Azbel, B. I., N. F. Goldshleger, E. T. Epelbaum, Yu Yu Yampolskii, M. L. Khidekel, Ya I. Isakov, and Kh M. Minachev. "Catalytic Properties of a Zeolite System in Bicyclo [2. 2. 1] Hepta-2, 5-Diene Reactions." In Studies in Surface Science and Catalysis, 1407–12. Elsevier, 1989. http://dx.doi.org/10.1016/s0167-2991(08)62025-x.

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Jackson, Y. A., and N. O. Townsend. "Bicyclic 5-5 Systems: Four Heteroatoms 1:3." In Comprehensive Heterocyclic Chemistry III, 129–59. Elsevier, 2008. http://dx.doi.org/10.1016/b978-008044992-0.00903-2.

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Sapi, Janos, and Stéphane Gérard. "Bicyclic 5-6 Systems: Three Heteroatoms 2:1." In Reference Module in Chemistry, Molecular Sciences and Chemical Engineering. Elsevier, 2020. http://dx.doi.org/10.1016/b978-0-12-818655-8.00021-4.

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Delia, T. J. "Bicyclic 5-6 Systems: Three Heteroatoms 1:2." In Comprehensive Heterocyclic Chemistry III, 339–430. Elsevier, 2008. http://dx.doi.org/10.1016/b978-008044992-0.00907-x.

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Buckley, B. R. "Bicyclic 5-6 Systems: Three Heteroatoms 2:1." In Comprehensive Heterocyclic Chemistry III, 431–91. Elsevier, 2008. http://dx.doi.org/10.1016/b978-008044992-0.00908-1.

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Delia, Thomas J., and Derek T. Hurst. "Bicyclic 5-6 Systems: Three Heteroatoms 1:2." In Comprehensive Heterocyclic Chemistry II, 229–81. Elsevier, 1996. http://dx.doi.org/10.1016/b978-008096518-5.00151-9.

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