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Journal articles on the topic 'Diazabicyclo[3.2.1]octane'

Author: Grafiati

Published: 4 June 2021

Last updated: 5 February 2022

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1

Liu, Xiangyuan, Yanli Yin, and Zhiyong Jiang. "Photoredox-catalysed formal [3+2] cycloaddition of N-aryl α-amino acids with isoquinoline N-oxides." Chemical Communications 55, no. 77 (2019): 11527–30. http://dx.doi.org/10.1039/c9cc06249a.

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This work realizes a new synthetic utility of N-aryl α-amino acids as a 1,2-synthon, a new strategy to achieve dearomatization of isoquinolines, and the synthesis of valuable diazabicyclo[3.2.1]octane-based compounds.

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2

Helliwell, Madeleine, Yun You, and John A. Joule. "The dipolar cycloaddition of methyl acrylate to 1,5,6-trimethyl-3-oxidopyrazinium." Acta Crystallographica Section E Structure Reports Online 62, no. 4 (March 8, 2006): o1293—o1294. http://dx.doi.org/10.1107/s1600536806007501.

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5,6-Dimethylpyrazin-2-one reacts with iodomethane to give a quaternary salt, deprotonation of which liberates a 3-oxidopyrazinium which undergoes a 1,3-dipolar cycloaddition with methyl acrylate to form methyl 5,8-dimethyl-4-methylene-2-oxo-3,8-diazabicyclo[3.2.1]octane-6-exo-carboxylate, C11H16N2O3, as the major product.

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3

Paliulis, Osvaldas, Dan Peters, Linas Miknius, and Algirdas Šačkus. "IMPROVED SYNTHESIS OF 8-METHYL-3, 8-DIAZABICYCLO [3.2.1] OCTANE." Organic Preparations and Procedures International 39, no. 1 (February 2007): 86–90. http://dx.doi.org/10.1080/00304940709458585.

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4

Huang, Long Jiang, and Da Wei Teng. "An improved and scalable process for 3,8-diazabicyclo[3.2.1]octane analogues." Chinese Chemical Letters 22, no. 5 (May 2011): 523–26. http://dx.doi.org/10.1016/j.cclet.2010.11.030.

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5

Boehringer, Régis, Philippe Geoffroy, and Michel Miesch. "Base catalyzed synthesis of bicyclo[3.2.1]octane scaffolds." Organic & Biomolecular Chemistry 13, no. 25 (2015): 6940–43. http://dx.doi.org/10.1039/c5ob00933b.

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A base-catalyzed and time controlled reaction of 1,3-cyclopentanediones tethered to activated olefins afforded in high yields either bicyclo[3.2.1]octane-6,8-dione or bicyclo[3.2.1]octane-6-carboxylate derivatives.

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6

Shainyan, Bagrat A., Mikhail Yu Moskalik, Vera V. Astakhova, and Uwe Schilde. "Novel design of 3,8-diazabicyclo[3.2.1]octane framework in oxidative sulfonamidation of 1,5-hexadiene." Tetrahedron 70, no. 30 (July 2014): 4547–51. http://dx.doi.org/10.1016/j.tet.2014.04.095.

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7

Woo, Grace H. C., Se-Ho Kim, and Peter Wipf. "π-Allyl palladium approach toward the diazabicyclo[3.2.1]octane core of the naphthyridinomycin alkaloids." Tetrahedron 62, no. 45 (November 2006): 10507–17. http://dx.doi.org/10.1016/j.tet.2006.06.114.

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8

Fujiu, Motohiro, Katsuki Yokoo, Toshiaki Aoki, Satoru Shibuya, Jun Sato, Kazuo Komano, Hiroki Kusano, Soichiro Sato, Masayoshi Ogawa, and Kenji Yamawaki. "Synthesis of 2-Thio-Substituted 1,6-Diazabicyclo[3.2.1]octane Derivatives, Potent β-Lactamase Inhibitors." Journal of Organic Chemistry 85, no. 15 (July 8, 2020): 9650–60. http://dx.doi.org/10.1021/acs.joc.0c00980.

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9

Villa, S. "3,8-Diazabicyclo-[3.2.1]-octane derivatives as analogues of ambasilide, a Class III antiarrhythmic agent." European Journal of Medicinal Chemistry 36, no. 6 (June 2001): 495–506. http://dx.doi.org/10.1016/s0223-5234(01)01246-6.

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10

Shainyan, Bagrat A., Mikhail Yu Moskalik, Matthias Heydenreich, and Erich Kleinpeter. "Conformational equilibrium and dynamic behavior of bis-N -triflyl substituted 3,8-diazabicyclo[3.2.1]octane." Magnetic Resonance in Chemistry 52, no. 8 (June 10, 2014): 448–52. http://dx.doi.org/10.1002/mrc.4086.

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11

Krauss, Babett, Clemens Mügge, Burkhard Ziemer, Adolf Zschunke, and Friedrich Krech. "1-Phosphabicyclo[3.2.1]octane." Zeitschrift für anorganische und allgemeine Chemie 627, no. 7 (July 2001): 1542–52. http://dx.doi.org/10.1002/1521-3749(200107)627:7<1542::aid-zaac1542>3.0.co;2-f.

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12

Trejbal, Jiří, Josef Pašek, and Miroslav Petrisko. "Effect of Zeolite ZSM-5 Particle Size in the Synthesis of 1,4-Diazabicyclo[2.2.2]octane." Collection of Czechoslovak Chemical Communications 73, no. 8-9 (2008): 956–66. http://dx.doi.org/10.1135/cccc20080956.

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The effect of the particle size of zeolite ZSM-5 in the synthesis of 1,4-diazabicyclo[2.2.2]octane from ethylenediamine was studied. The activity of the catalyst and its selectivity for 1,4-diazabicyclo[2.2.2]octane increase with decreasing particle size of zeolite ZSM-5.

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13

Kannan, Vembaiyan. "Diazabicyclo[2.2.2]octane - DABCO." Synlett, no. 6 (2004): 1120–21. http://dx.doi.org/10.1055/s-2004-822909.

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14

Britvin, Sergey N., Andrey M. Rumyantsev, Anastasia E. Zobnina, and Marina V. Padkina. "Molecular structure, interatomic interactions and vibrational analysis of 1,4-diazabicyclo[3.2.1]octane parent ring system." Journal of Molecular Structure 1130 (February 2017): 395–99. http://dx.doi.org/10.1016/j.molstruc.2016.10.065.

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15

Brisdon, Alan K., Abeer M. T. Muneer, and Robin G. Pritchard. "Halogen bonding in a series of Br(CF2) n Br–DABCO adducts (n = 4, 6, 8)." Acta Crystallographica Section C Structural Chemistry 73, no. 11 (October 6, 2017): 874–79. http://dx.doi.org/10.1107/s2053229617013663.

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Halogen bonding (XB) is a highly-directional class of intermolecular interactions that has been used as a powerful tool to drive the design of crystals in the solid phase. To date, the majority of XB donors have been iodine-containing compounds, with many fewer involving brominated analogues. We report the formation of adducts in the vapour phase from a series of dibromoperfluoroalkyl compounds, BrCF2(CF2) n CF2Br (n = 2, 4, 6), and 1,4-diazabicyclo[2.2.2]octane (DABCO). Single-crystal X-ray diffraction studies of the colourless crystals identified 1,4-diazabicyclo[2.2.2]octane–1,4-dibromoperfluorobutane (1/1), C4Br2F8·C6H12N2, (I), 1,4-diazabicyclo[2.2.2]octane–1,6-dibromoperfluorohexane (1/1), C6Br2F12·C6H12N2, (II), and 1,4-diazabicyclo[2.2.2]octane–1,8-dibromoperfluorooctane (1/1), C8Br2F16·C6H12N2, (III), each of which displays a one-dimensional halogen-bonded network. All three adducts exhibit N...Br distances less than the sum of the van der Waals radii, with butane analogue (I) showing the shortest N...Br halogen-bond distances yet reported between a bromoperfluorocarbon and a nitrogen base [2.809 (3) and 2.818 (3) Å], which are 0.58 and 0.59 Å shorter than the sum of the van der Waals radii.

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16

Bombieri, Gabriella, Roberto Artali, Daniela Barlocco, Giorgio Cignarella, and Fiorella Meneghetti. "Structural and Conformational Studies of 3,8-Diazabicyclo[3.2.1]octane Derivatives, Selective Agonists of m-Opioid Receptors." HETEROCYCLES 53, no. 11 (2000): 2403. http://dx.doi.org/10.3987/com-00-8995.

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17

Villa, Stefanie, Daniela Barlocco, Giorgio Cignarella, Gyula Julius Papp, Beata Balati, Janos Takacs, Andras Varro, Andras Borosy, Katalin Keseru, and Peter Matyus. "ChemInform Abstract: 3,8-Diazabicyclo-[3.2.1]-octane Derivatives as Analogues of Ambasilide, a Class III Antiarrhythmic Agent." ChemInform 33, no. 1 (May 23, 2010): no. http://dx.doi.org/10.1002/chin.200201172.

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18

Shainyan, Bagrat A., Mikhail Yu Moskalik, Vera V. Astakhova, and Uwe Schilde. "ChemInform Abstract: Novel Design of 3,8-Diazabicyclo[3.2.1]octane Framework in Oxidative Sulfonamidation of 1,5-Hexadiene." ChemInform 45, no. 50 (November 27, 2014): no. http://dx.doi.org/10.1002/chin.201450108.

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19

Eggimann, Thomas, Nan Ibrahim, R. Anthony Shaw, and Hal Wieser. "The vibrational spectra (100–1500 cm−1) of a series of bicyclo[3.2.1]octanes assigned by means of scaled 3-21G ab initio harmonic force fields." Canadian Journal of Chemistry 71, no. 4 (April 1, 1993): 578–609. http://dx.doi.org/10.1139/v93-080.

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The infrared absorption (vapor phase and solution) and Raman (liquid phase) spectra of bicyclo[3.2.1]octane, 8-oxabicyclo[3.2.1]octane, 6-oxabicyclo[3.2.1]octane, 6,8-dioxabicyclo[3.2.1]octane, and the 7,7-dideutero-substituted derivatives of the last two compounds are reported in the region 100–1500 cm−1 for the first time. The vibrational spectra are assigned almost completely with the guidance of ab initio 3-21G geometries and scaled force fields. A total of 14 force-field scale facors are transferred from smaller molecules, predicting the frequencies with an average error of 7.6 cm−1 (1.2%) for 196 assigned transitions. After optimizing the factors in an overlay refinement involving all six molecules, the frequencies are within 5.7 cm−1 (0.75%) of experiment. The ab initio absorption and Raman intensities are calculated with the 3-21G basis set and are demonstrated to be of such accuracy as to be useful for the spectral assignments. These intensities are calculated with uniformly and nonuniformly scaled force fields and compared to the experimental spectra. The intensities derived from the latter force fields are superior, meaning that nonuniform scaling is preferable at this level of theory for both vibrational frequencies and normal mode descriptions.

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20

Yuan, Yutao, Yanqiang Zhang, Long Liu, Nianming Jiao, Kun Dong, and Suojiang Zhang. "Bicyclic ammonium ionic liquids as dense hypergolic fuels." RSC Advances 7, no. 35 (2017): 21592–99. http://dx.doi.org/10.1039/c7ra03090h.

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1-Aza-bicyclo[2.2.2]octane/1,4-diazabicyclo[2.2.2]octane-based dicyanamide possesses higher densities (1.06–1.31 cm⁻³) than the corresponding pyrrolidinium and imidazolium-based isomers, besides hypergolicity with white fuming nitric acid.

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21

Yang, Hongguang, Xiaoyu Liu, Xiaoyu Li, Xiang Shi, Feilong Yang, Xiaozhen Jiao, and Ping Xie. "Enantioselective total synthesis of colomitides and their absolute configuration determination and structural revision." Organic & Biomolecular Chemistry 15, no. 17 (2017): 3728–35. http://dx.doi.org/10.1039/c7ob00539c.

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22

Tzou, J. R., A. Huang, F. F. Fleming, R. E. Norman, and S. C. Chang. "1-Cyanomethyl-6,7,8-trioxabicyclo[3.2.1]octane." Acta Crystallographica Section C Crystal Structure Communications 52, no. 4 (April 15, 1996): 1012–14. http://dx.doi.org/10.1107/s0108270195014004.

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23

Sosonyuk, Sergey E., Anita Peshich, Anastasia V. Tutushkina, Dmitry A. Khlevin, Natalia A. Lozinskaya, Yulia A. Gracheva, Valeria A. Glazunova, et al. "Synthesis and cytotoxicity of novel simplified eleutherobin analogues as potential antitumour agents." Organic & Biomolecular Chemistry 17, no. 10 (2019): 2792–97. http://dx.doi.org/10.1039/c8ob02915f.

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24

Jin, Zhi-Min, Hui-Min Zhang, Hai-Bin Wang, Mao-Lin Hu, and Liang Shen. "Diazabicyclo[2.2.2]octane-1,4-diium dichromate." Acta Crystallographica Section C Crystal Structure Communications 60, no. 11 (October 22, 2004): m572—m574. http://dx.doi.org/10.1107/s010827010402342x.

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25

Salmanpoor, Sadegh, Mahmood Tajbakhsh, Setareh Habibzadeh, Davood Azarifar, and Hassan Ghasemnejad-Bosra. "Chlorination of 3-substituted sydnones using 1,4-dichloro-1,4-diazoniabicyclo[2,2,2]octane bis-chloride." Journal of Chemical Research 2008, no. 11 (November 2008): 662–63. http://dx.doi.org/10.3184/030823408x375205.

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1,4-Dichloro-1,4-diazoniabicyclo[2,2,2]octane bis-chloride has been used as effective reagent for the chlorination of 3-arylsydnones to their corresponding 4-chloro derivatives in DMF-H2O at room temperature. The 1,4-diazabicyclo [2,2,2]octane was regenerated, rechlorinated and reused several times.

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26

Barlocco, D., G. Cignarella, P. Vianello, S. Villa, G. A. Pinna, P. Fadda, and W. Fratta. "Synthesis and μ-opioid receptor affinity of a new series of nitro substituted 3,8-diazabicyclo[3.2.1]octane derivatives." Il Farmaco 53, no. 8-9 (August 1998): 557–62. http://dx.doi.org/10.1016/s0014-827x(98)00065-2.

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27

Liu, Hong, Tie-Ming Cheng, Hong-Mei Zhang, and Run-Tao Li. "Synthesis and Structure-Activity Relationship of Di-(3, 8-diazabicyclo[3.2.1]octane) Diquaternary Ammonium Salts as Unique Analgesics." Archiv der Pharmazie 336, no. 11 (November 2003): 510–13. http://dx.doi.org/10.1002/ardp.200300749.

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28

Barlocco, Daniela, Giorgio Cignarella, Donatella Tondi, Paola Vianello, Stefania Villa, Alessandro Bartolini, Carla Ghelardini, et al. "Mono- and Disubstituted-3,8-diazabicyclo[3.2.1]octane Derivatives as Analgesics Structurally Related to Epibatidine: Synthesis, Activity, and Modeling." Journal of Medicinal Chemistry 41, no. 5 (February 1998): 674–81. http://dx.doi.org/10.1021/jm970427p.

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29

Zhou, Xiao-Han, Ying Liu, Rui-Jie Zhou, Hao Song, Xiao-Yu Liu, and Yong Qin. "Construction of the highly oxidized bicyclo[3.2.1]octane CD ring system of aconitine via a late stage enyne cycloisomerization." Chemical Communications 54, no. 86 (2018): 12258–61. http://dx.doi.org/10.1039/c8cc06819d.

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30

Gupta, Vijaykumar, Shilpi Kabiraj, Monica Rane, and Sujata V. Bhat. "Environmentally benign syntheses of hexahydro-cyclopenta(b)furan and 2-oxabicyclo[3.2.1]octane derivatives." RSC Advances 5, no. 29 (2015): 22951–56. http://dx.doi.org/10.1039/c4ra14359k.

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31

Weck, Christian, Franziska Obst, Elisa Nauha, Christopher J. Schofield, and Tobias Gruber. "Synthesis of a bicyclic oxo-γ-lactam from a simple caprolactam derivative." New Journal of Chemistry 41, no. 18 (2017): 9984–89. http://dx.doi.org/10.1039/c7nj02348k.

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32

Newland, Stephanie H., David J. Xuereb, Enrica Gianotti, Leonardo Marchese, Ramon Rios, and Robert Raja. "Highly effective design strategy for the heterogenisation of chemo- and enantioselective organocatalysts." Catalysis Science & Technology 5, no. 2 (2015): 660–65. http://dx.doi.org/10.1039/c4cy00895b.

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33

Saborío, Maricruz G., Oscar Bertran, Sonia Lanzalaco, Marleen Häring, David Díaz Díaz, Francesc Estrany, and Carlos Alemán. "Cationic ionene as an n-dopant agent of poly(3,4-ethylenedioxythiophene)." Physical Chemistry Chemical Physics 20, no. 15 (2018): 9855–64. http://dx.doi.org/10.1039/c7cp07878a.

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34

Li, Xiwang, Pei He, Hai-Bing Zhou, and Chune Dong. "One-step pathway to selenoisobenzofuran-1(3H)-imine derivatives through highly selective selenocyclization of olefinic amides with benzeneselenyl chloride." Organic & Biomolecular Chemistry 16, no. 12 (2018): 2150–55. http://dx.doi.org/10.1039/c8ob00179k.

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A 1,4-diazabicyclo[2.2.2]octane catalyzed selenocyclization of olefinic amides to form various benzeneselenyl substituted isobenzofuran-1(3H)-imine derivatives was achieved under mild reaction conditions.

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35

Ji, Chengmin, Shenhui Li, Feng Deng, Sijie Liu, Muhammad Adnan Asghar, Zhihua Sun, Maochun Hong, and Junhua Luo. "Bistable N–H⋯N hydrogen bonds for reversibly modulating the dynamic motion in an organic co-crystal." Physical Chemistry Chemical Physics 18, no. 16 (2016): 10868–72. http://dx.doi.org/10.1039/c6cp01073c.

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36

Sreeperumbuduru, R. S., Z. M. Abid, K. M. Claunch, H. H. Chen, S. M. McGillivray, and E. E. Simanek. "Synthesis and antimicrobial activity of triazine dendrimers with DABCO groups." RSC Advances 6, no. 11 (2016): 8806–10. http://dx.doi.org/10.1039/c5ra10388f.

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37

Dastlik, KA, EL Ghisalberti, BW Skelton, and AH White. "Structural Studies of Bicyclo[3.2.1]octane and Bicyclo[2.2.2]octane Diols." Australian Journal of Chemistry 45, no. 5 (1992): 959. http://dx.doi.org/10.1071/ch9920959.

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The crystal structures of 4 α,5 α and 4 β,5 β-dihydroxyisoeremone (4) and (5), incorporating the bicyclo[2.2.2]octane skeleton, and the bicyclo[3.2.l]octane diol (6) have been determined by X-ray crystallographic methods.

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38

Aurich, Hans Günter, and Michael Soeberdt. "Darstellung enantiomerenreiner 3-Oxa-2,7-diazabicyclo[3.3.0]octane und ihre Umwandlung in andere bicyclische Ringsysteme/Preparation of Pure Enantiomeric 3-Oxa-2,7-diazabicyclo[3.3.0]octanes and their Conversion to Other Bicyclic Ring-Systems." Zeitschrift für Naturforschung B 54, no. 1 (January 1, 1999): 87–95. http://dx.doi.org/10.1515/znb-1999-0117.

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Pure Enantiomeric (S)-N-benzylalaninol (R1 = Me) and (S)-N-benzylvalinol (R1 = i-Pr) were allylated with Br-CH2-CH=CR2R3 (R2 = R3 = H; R2 = Ph, R3 = H; R2 = R3 = Ph). Swern oxidation followed by treatment with methylhydroxylamine afforded nitrones 6 (Me- N(O)=CH-CHR1-N(CH2Ph)CH2-CH=CR2R3) which underwent an intramolecular 1,3-dipolar cycloaddition providing 3-oxa-2,7-diazabicyclo[3.3.0]octanes, e.g. (1R,5R,8S)-7-benzyl-2,8- dimethyl-3-oxa-2,7-diazabicyclo[3.3.0]octane 7a (R1 = Me, R2 = R3 = H) and (1R,4R,5R,8S)- 7-benzyl-2,8-dimethyl-4-phenyl-3-oxa-2,7-diazabicyclo[3.3.0]-octane 7b (R1 = Me, R2 = Ph, R3 = H).Reductive ring opening of 7a and 7b afforded the corresponding a-hydroxyalkylated pyrrolidines (9a: R2 = H or 9b: R2 = Ph. resp.). Condensation of these compounds with benzaldehyde yielded a mixture of diastereomeric 4-oxa-2,8-diazabicyclo[4.3.0]- nonanes: 10a/11a (1R,3S,6R,9S)/(1R,3R,6R,9S) R1 = Me, R2 = R3 = H and 10b /lib (1R,3S,5R,6R,9S)/(1R,3R,5R,6R,9S) R1 = Me, R2 = Ph, R3 = H. Pyrrolidine 9b was converted to the mesylate which formed (1R,4S,5R,7S)-3-benzyl-4,6-dimethyl-7-phenyl-3,6-diazabicyclo[3.2.0]heptane 13 along with (4R,5S)-1-benzyl-3,5-dimethyl-4-styryl-imidazolidine 15 upon treatment with sodium hydroxide.

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39

Halimehjani, Azim Ziyaei, and Elham Badali. "DABCO bond cleavage for the synthesis of piperazine derivatives." RSC Advances 9, no. 62 (2019): 36386–409. http://dx.doi.org/10.1039/c9ra07870c.

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40

Bakthadoss, Manickam, and Mohammad Mushaf. "Intramolecular [3 + 2] nitrone cycloaddition reaction: highly regio and diastereoselective synthesis of bicyclo[3.2.1]octane scaffolds." Organic & Biomolecular Chemistry 18, no. 47 (2020): 9653–59. http://dx.doi.org/10.1039/d0ob01960g.

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Development of a regio- and a diastereoselective protocol for the synthesis of bicyclo[3.2.1]octane frameworks from vinylogous carbonates and N-substituted hydroxylamine hydrochlorides via intramolecular 1,3-dipolar nitrone cycloaddition reaction.

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41

Rodriguez, Sandra, Uxue Uria, Efraim Reyes, Liher Prieto, Marta Rodríguez-Rodríguez, Luisa Carrillo, and Jose L. Vicario. "Enantioselective construction of the 8-azabicyclo[3.2.1]octane scaffold: application in the synthesis of tropane alkaloids." Organic & Biomolecular Chemistry 19, no. 17 (2021): 3763–75. http://dx.doi.org/10.1039/d1ob00143d.

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The 8-azabicyclo[3.2.1]octane core is the central motif of tropane alkaloids. This review compiles the methodologies employed to synthesize this scaffold in an enantioenriched form from achiral starting materials.

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42

Morita, Hagino, Ryo Tsunashima, Sadafumi Nishihara, and Tomoyuki Akutagawa. "Doping of metal-free molecular perovskite with hexamethylenetetramine to create non-centrosymmetric defects." CrystEngComm 22, no. 13 (2020): 2279–82. http://dx.doi.org/10.1039/d0ce00173b.

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43

Ershov, O. V., M. Yu Ievlev, V. A. Tafeenko, and O. E. Nasakin. "Glycine catalyzed diastereoselective domino-synthesis of 6-imino-2,7-dioxabicyclo[3.2.1]octane-4,4,5-tricarbonitriles in water." Green Chemistry 17, no. 8 (2015): 4234–38. http://dx.doi.org/10.1039/c5gc00909j.

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The first example of glycine catalyzed directly synthesis of 6-imino-2,7-dioxabicyclo[3.2.1]octane-4,4,5-tricarbonitriles in aqueous medium was described, giving products in excellent yields and up to excellent diastereoselectivities.

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44

Laus, Gerhard, Volker Kahlenberg, Klaus Wurst, Michael Hummel, and Herwig Schottenberger. "1,4-Diazabicyclo[2.2.2]octane (DABCO) 5-aminotetrazolates." Crystals 2, no. 1 (February 6, 2012): 96–104. http://dx.doi.org/10.3390/cryst2010096.

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45

Ding, Cheng-Rong, Zhi-Min Jin, Hai-Bin Wang, Mao-Lin Hu, and He Lin. "1,4-Diazabicyclo[2.2.2]octane-1,4-diium trichromate." Acta Crystallographica Section C Crystal Structure Communications 60, no. 5 (April 21, 2004): m203—m204. http://dx.doi.org/10.1107/s0108270104004007.

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Guo, Jiangna, Jing Qin, Yongyuan Ren, Bin Wang, Hengqing Cui, Yingying Ding, Hailei Mao, and Feng Yan. "Antibacterial activity of cationic polymers: side-chain or main-chain type?" Polymer Chemistry 9, no. 37 (2018): 4611–16. http://dx.doi.org/10.1039/c8py00665b.

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Imidazolium (Im), quaternary ammonium (Qa), and 1,4-diazabicyclo[2.2.2]octane-1,4-diium (DABCO-diium) cation-based small molecule cationic compounds and their corresponding side-chain/main-chain cationic polymers were synthesized.

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Liang, Jinpeng, Ting Yin, Song Han, and Jing Yang. "Synthesis of macrocyclic poly(α-hydroxyl acids) via DABCO-mediated ROP of O-carboxylanhydrides derived from l-phenylalanine even in the presence of an alcohol." Polymer Chemistry 11, no. 43 (2020): 6944–52. http://dx.doi.org/10.1039/d0py01083a.

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On exploration of a catalytic system including simple 1,4-diazabicyclo-[2.2.2]octane (DABCO), triethylboron (TEB) and benzylalcohol (BnOH), a new pathway to achieve cyclic PAHAs was developed via ROP of OCAs.

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Subbareddy, Chitreddy V., and Shanmugam Sumathi. "One-pot three-component protocol for the synthesis of indolyl-4H-chromene-3-carboxamides as antioxidant and antibacterial agents." New Journal of Chemistry 41, no. 17 (2017): 9388–96. http://dx.doi.org/10.1039/c7nj00980a.

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Meng, Dan, Yongsheng Qiao, Xin Wang, Wei Wen, and Sanhu Zhao. "DABCO-catalyzed Knoevenagel condensation of aldehydes with ethyl cyanoacetate using hydroxy ionic liquid as a promoter." RSC Advances 8, no. 53 (2018): 30180–85. http://dx.doi.org/10.1039/c8ra06506c.

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N-(2-Hydroxy-ethyl)-pyridinium chloride ([HyEtPy]Cl) was synthesized and explored as a novel promoter for 1,4-diazabicyclo [2.2.2] octane (DABCO)-catalyzed Knoevenagel condensation reactions, excellent catalytic activity was obtained.

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Lahanas, Nicole, Pavel Kucheryavy, Roger A. Lalancette, and Jenny V. Lockard. "Crystallographic identification of a series of manganese porphyrin complexes with nitrogenous bases." Acta Crystallographica Section C Structural Chemistry 75, no. 3 (February 13, 2019): 304–12. http://dx.doi.org/10.1107/s2053229619001232.

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Studying the axial ligation behavior of metalloporphyrins with nitrogenous bases helps to better understand not only the biological function of heme-based protein systems, but also the catalytic properties of porphyrin-based reaction sites in other biomimetic synthetic support environments. Unlike iron porphyrin complexes, little is known about the axial ligation behavior of Mn porphyrins, particularly in the solid state with Mn in the +3 oxidation state. Here, we present the syntheses and crystal and molecular structures of three new high-spin manganese(III) porphyrin complexes with the different amine-based axial ligands imidazole (im), piperidine (pip), and 1,4-diazabicyclo[2.2.2]octane (DABCO), namely bis(imidazole)(5,10,15,20-tetraphenylporphyrinato)manganese(III) chloride chloroform disolvate, [Mn(C44H28N4)(C3H4N2)2]Cl·2CHCl3 or [Mn(TPP)(im)2]Cl·2CHCl3 (TPP = 5,10,15,20-tetraphenylporphyrin), (I), bis(piperidine)(5,10,15,20-tetraphenylporphyrinato)manganese(III) chloride, [Mn(C44H28N4)(C5H11N)2]Cl or [Mn(TPP)(pip)2]Cl, (II), and chlorido(1,4-diazabicyclo[2.2.2]octane)(5,10,15,20-tetraphenylporphyrin)manganese(III)–1,4-diazabicyclo[2.2.2]octane–toluene–water (4/4/4/1), [Mn(C44H28N4)Cl(C6H12N2)]·C6H12N2·C7H8·0.25H2O or [Mn(TPP)Cl(DABCO)]·(DABCO)·(toluene)·0.25H2O, (IV). A fourth complex, chlorido(pyridine)(5,10,15,20-tetraphenylporphryinato)manganese(III) pyridine disolvate, [Mn(C44H28N4)Cl(C5H5N)]·2C5H5N or [Mn(TPP)Cl(py)]·2(py), (III), acquired using different crystallization methods from published data, is also reported and compared to the previous structures.

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