1
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Kumar A, Khan WA, Ahamad S, Mohanan K. Trifluorodiazoethane: A versatile building block to access trifluoromethylated heterocycles. J Heterocycl Chem 2021. [DOI: 10.1002/jhet.4416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Anuj Kumar
- Medicinal and Process Chemistry Division CSIR‐Central Drug Research Institute Lucknow India
| | | | - Shakir Ahamad
- Department of Chemistry Aligarh Muslim University Aligarh India
| | - Kishor Mohanan
- Medicinal and Process Chemistry Division CSIR‐Central Drug Research Institute Lucknow India
- Medicinal and Process Chemistry Division Academy of Scientific and Innovative Research Ghaziabad India
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2
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Affiliation(s)
- Pavel K. Mykhailiuk
- Enamine Ltd., Chervonotkatska 78, 02094 Kyiv, Ukraine
- Chemistry Department, Taras Shevchenko National University of Kyiv, Volodymyrska 64, 01601 Kyiv, Ukraine
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3
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Peng X, Zhang F, Ma J. Cu‐Catalysed Three‐Component Reaction of Aryldiazonium Salts with Fluorinated Diazo Reagents and Nitriles: Access to Difluoro‐ and Trifluoromethylated
N
1
‐Aryl‐1,2,4‐triazoles. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000776] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Xing Peng
- Department of Chemistry Tianjin Key Laboratory of Molecular Optoelectronic Sciences Frontiers Science Center for Synthetic Biology (Ministry of Education) Tianjin Collaborative Innovation Centre of Chemical Science & Engineering Tianjin University Tianjin 300072
- Joint School of National University of Singapore and Tianjin University International Campus of Tianjin University, Binhai New City Fuzhou 350207 People's Republic of China
| | - Fa‐Guang Zhang
- Department of Chemistry Tianjin Key Laboratory of Molecular Optoelectronic Sciences Frontiers Science Center for Synthetic Biology (Ministry of Education) Tianjin Collaborative Innovation Centre of Chemical Science & Engineering Tianjin University Tianjin 300072
- Joint School of National University of Singapore and Tianjin University International Campus of Tianjin University, Binhai New City Fuzhou 350207 People's Republic of China
| | - Jun‐An Ma
- Department of Chemistry Tianjin Key Laboratory of Molecular Optoelectronic Sciences Frontiers Science Center for Synthetic Biology (Ministry of Education) Tianjin Collaborative Innovation Centre of Chemical Science & Engineering Tianjin University Tianjin 300072
- Joint School of National University of Singapore and Tianjin University International Campus of Tianjin University, Binhai New City Fuzhou 350207 People's Republic of China
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4
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Riegel GF, Kass SR. N-Vinyl and N-Aryl Hydroxypyridinium Ions: Charge-Activated Catalysts with Electron-Withdrawing Groups. J Org Chem 2020; 85:6017-6026. [DOI: 10.1021/acs.joc.0c00498] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- George F. Riegel
- Department of Chemistry, University of Minnesota, 207 Pleasant Street, SE, Minneapolis, Minnesota 55455, United States
| | - Steven R. Kass
- Department of Chemistry, University of Minnesota, 207 Pleasant Street, SE, Minneapolis, Minnesota 55455, United States
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5
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Jamali MF, Gupta E, Kumar A, Kant R, Mohanan K. Ag-Catalyzed Trifluoromethylative Ring Expansion of Isatins and Isatin Ketimines with Trifluorodiazoethane. Chem Asian J 2020; 15:757-761. [PMID: 32017397 DOI: 10.1002/asia.201901799] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 02/03/2020] [Indexed: 01/06/2023]
Abstract
A general method for the construction of trifluoromethylated 2-quinolinones has been established herein by using a trifluoromethylative ring expansion of isatin with trifluorodiazoethane. The strategy provides a platform for the rapid synthesis of a wide range of substituted 3-hydroxy-4-trifluoromethyl-2-quinolinones. This operationally simple and robust Ag-catalyzed protocol successfully transforms isatin ketimines to 3-amino-4-trifluoromethylquinolinones in excellent yields. The utility of this novel method is further illustrated by the conversion of the products into various synthetically and medicinally relevant molecules.
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Affiliation(s)
- Muhammad Fahad Jamali
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow, 226031, India.,Academy of Scientific and Innovative Research, 110025, New Delhi, India
| | - Ekta Gupta
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow, 226031, India
| | - Anuj Kumar
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow, 226031, India
| | - Ruchir Kant
- Molecular and Structural Biology, CSIR-Central Drug Research Institute, Lucknow, 226031, India
| | - Kishor Mohanan
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow, 226031, India.,Academy of Scientific and Innovative Research, 110025, New Delhi, India
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6
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Zhang ZQ, Zheng MM, Xue XS, Marek I, Zhang FG, Ma JA. Catalytic Enantioselective Cyclopropenation of Internal Alkynes: Access to Difluoromethylated Three-Membered Carbocycles. Angew Chem Int Ed Engl 2019; 58:18191-18196. [PMID: 31633856 DOI: 10.1002/anie.201911701] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Revised: 10/14/2019] [Indexed: 01/27/2023]
Abstract
Herein we described an efficient RhII -catalyzed enantioselective cyclopropenation reaction of internal alkynes with a masked difluorodiazoethane reagent (PhSO2 CF2 CHN2 , Ps-DFA). This asymmetric transformation offers efficient access to a broad range of enantioenriched difluoromethylated cyclopropenes (40 examples, up to 99 % yield, 97 % ee). The synthetic utility of obtained strained carbocycles is demonstrated by subsequent stereodefined processes, including cross-couplings, hydrogenation, Diels-Alder reaction, and Pauson-Khand reaction.
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Affiliation(s)
- Zhi-Qi Zhang
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin Collaborative Innovation Centre of Chemical Science & Engineering, Tianjin University, Tianjin, 300072, P. R. China.,Joint School of NUS & TJU, International Campus of Tianjin University, Fuzhou, 350207, P. R. China
| | - Meng-Meng Zheng
- State Key Laboratory of Elemento-organic Chemistry, Nankai University, Tianjin, 300071, P. R. China
| | - Xiao-Song Xue
- State Key Laboratory of Elemento-organic Chemistry, Nankai University, Tianjin, 300071, P. R. China
| | - Ilan Marek
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa, 3200009, Israel
| | - Fa-Guang Zhang
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin Collaborative Innovation Centre of Chemical Science & Engineering, Tianjin University, Tianjin, 300072, P. R. China.,Joint School of NUS & TJU, International Campus of Tianjin University, Fuzhou, 350207, P. R. China
| | - Jun-An Ma
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin Collaborative Innovation Centre of Chemical Science & Engineering, Tianjin University, Tianjin, 300072, P. R. China.,Joint School of NUS & TJU, International Campus of Tianjin University, Fuzhou, 350207, P. R. China.,State Key Laboratory of Elemento-organic Chemistry, Nankai University, Tianjin, 300071, P. R. China
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7
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Zhang Z, Zheng M, Xue X, Marek I, Zhang F, Ma J. Catalytic Enantioselective Cyclopropenation of Internal Alkynes: Access to Difluoromethylated Three‐Membered Carbocycles. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201911701] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Zhi‐Qi Zhang
- Department of ChemistryTianjin Key Laboratory of Molecular Optoelectronic SciencesTianjin Collaborative Innovation Centre of Chemical Science & EngineeringTianjin University Tianjin 300072 P. R. China
- Joint School of NUS & TJUInternational Campus of Tianjin University Fuzhou 350207 P. R. China
| | - Meng‐Meng Zheng
- State Key Laboratory of Elemento-organic ChemistryNankai University Tianjin 300071 P. R. China
| | - Xiao‐Song Xue
- State Key Laboratory of Elemento-organic ChemistryNankai University Tianjin 300071 P. R. China
| | - Ilan Marek
- Schulich Faculty of ChemistryTechnion-Israel Institute of Technology Haifa 3200009 Israel
| | - Fa‐Guang Zhang
- Department of ChemistryTianjin Key Laboratory of Molecular Optoelectronic SciencesTianjin Collaborative Innovation Centre of Chemical Science & EngineeringTianjin University Tianjin 300072 P. R. China
- Joint School of NUS & TJUInternational Campus of Tianjin University Fuzhou 350207 P. R. China
| | - Jun‐An Ma
- Department of ChemistryTianjin Key Laboratory of Molecular Optoelectronic SciencesTianjin Collaborative Innovation Centre of Chemical Science & EngineeringTianjin University Tianjin 300072 P. R. China
- Joint School of NUS & TJUInternational Campus of Tianjin University Fuzhou 350207 P. R. China
- State Key Laboratory of Elemento-organic ChemistryNankai University Tianjin 300071 P. R. China
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8
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Affiliation(s)
- Sushobhan Mukhopadhyay
- Medicinal and Process Chemistry Division; CSIR-Central Drug Research Institute; Sector 10, Jankipuram Extension; Sitapur Road Lucknow 226031 Uttar Pradesh India
| | - Sanjay Batra
- Medicinal and Process Chemistry Division; CSIR-Central Drug Research Institute; Sector 10, Jankipuram Extension; Sitapur Road Lucknow 226031 Uttar Pradesh India
- Academy of Scientific and Innovative Research; CSIR - Human Resource Development Centre, (CSIR-HRDC) Campus, Sector 19; Kamla Nehru Nagar Ghaziabad 201002 Uttar Pradesh India
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9
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Gupta E, Nair SR, Kant R, Mohanan K. Additive-Free Three-Component Synthesis of Spiro-isoxazolidine-oxindoles Employing Trifluorodiazoethane. J Org Chem 2018; 83:14811-14819. [DOI: 10.1021/acs.joc.8b02504] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
| | | | | | - Kishor Mohanan
- Academy of Scientific and Innovative Research, New Delhi 110001, India
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10
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Nosova EV, Lipunova GN, Charushin VN, Chupakhin ON. Fluorine-containing indoles: Synthesis and biological activity. J Fluor Chem 2018. [DOI: 10.1016/j.jfluchem.2018.05.012] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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11
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Zhang XW, Hu WL, Chen S, Hu XG. Cu-Catalyzed Synthesis of Fluoroalkylated Isoxazoles from Commercially Available Amines and Alkynes. Org Lett 2018; 20:860-863. [DOI: 10.1021/acs.orglett.7b04028] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Xiao-Wei Zhang
- National Engineering Research Center
for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, 330022, China
| | - Wen-Li Hu
- National Engineering Research Center
for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, 330022, China
| | - Suo Chen
- National Engineering Research Center
for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, 330022, China
| | - Xiang-Guo Hu
- National Engineering Research Center
for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, 330022, China
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12
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Kotozaki M, Chanthamath S, Fujii T, Shibatomi K, Iwasa S. Highly enantioselective synthesis of trifluoromethyl cyclopropanes by using Ru(ii)–Pheox catalysts. Chem Commun (Camb) 2018; 54:5110-5113. [DOI: 10.1039/c8cc02286k] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
An asymmetric synthesis of various trifluoromethyl cyclopropanes from olefins, such as vinyl ferrocene, vinyl ethers, vinyl amines, vinyl carbamates and dienes, was achieved by using Ru(ii)–Pheox catalysts.
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Affiliation(s)
- Manato Kotozaki
- Department of Environmental and Life Sciences
- Toyohashi University of Technology
- Toyohashi 441-8580
- Japan
| | - Soda Chanthamath
- Department of Environmental and Life Sciences
- Toyohashi University of Technology
- Toyohashi 441-8580
- Japan
| | - Takuji Fujii
- Department of Environmental and Life Sciences
- Toyohashi University of Technology
- Toyohashi 441-8580
- Japan
| | - Kazutaka Shibatomi
- Department of Environmental and Life Sciences
- Toyohashi University of Technology
- Toyohashi 441-8580
- Japan
| | - Seiji Iwasa
- Department of Environmental and Life Sciences
- Toyohashi University of Technology
- Toyohashi 441-8580
- Japan
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13
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Li F, Wang J, Pei W, Li H, Zhang H, Song M, Guo L, Zhang A, Liu L. Direct [3+2]-cycloaddition of electron-deficient alkynes with CF3CHN2: Regioselective one-pot synthesis of 3-trifluoromethylpyrazoles. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.09.086] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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14
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Bolotin DS, Bokach NA, Demakova MY, Kukushkin VY. Metal-Involving Synthesis and Reactions of Oximes. Chem Rev 2017; 117:13039-13122. [PMID: 28991449 DOI: 10.1021/acs.chemrev.7b00264] [Citation(s) in RCA: 132] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
This review classifies and summarizes the past 10-15 years of advancements in the field of metal-involving (i.e., metal-mediated and metal-catalyzed) reactions of oximes. These reactions are diverse in nature and have been employed for syntheses of oxime-based metal complexes and cage-compounds, oxime functionalizations, and the preparation of new classes of organic species, in particular, a wide variety of heterocyclic systems spanning small 3-membered ring systems to macroheterocycles. This consideration gives a general outlook of reaction routes, mechanisms, and driving forces and underlines the potential of metal-involving conversions of oxime species for application in various fields of chemistry and draws attention to the emerging putative targets.
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Affiliation(s)
- Dmitrii S Bolotin
- Institute of Chemistry, Saint Petersburg State University , Universitetskaya Nab., 7/9, Saint Petersburg, Russian Federation
| | - Nadezhda A Bokach
- Institute of Chemistry, Saint Petersburg State University , Universitetskaya Nab., 7/9, Saint Petersburg, Russian Federation
| | - Marina Ya Demakova
- Institute of Chemistry, Saint Petersburg State University , Universitetskaya Nab., 7/9, Saint Petersburg, Russian Federation
| | - Vadim Yu Kukushkin
- Institute of Chemistry, Saint Petersburg State University , Universitetskaya Nab., 7/9, Saint Petersburg, Russian Federation
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15
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Peng SQ, Zhang XW, Zhang L, Hu XG. Esterification of Carboxylic Acids with Difluoromethyl Diazomethane and Interrupted Esterification with Trifluoromethyl Diazomethane: A Fluorine Effect. Org Lett 2017; 19:5689-5692. [DOI: 10.1021/acs.orglett.7b02866] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Shan-Qing Peng
- National
Engineering Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, 330022, China
| | - Xiao-Wei Zhang
- National
Engineering Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, 330022, China
| | - Long Zhang
- Key
Laboratory for Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Xiang-Guo Hu
- National
Engineering Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, 330022, China
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16
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Lebed PS, Fenneteau J, Wu Y, Cossy J, Mykhailiuk PK. Synthesis of N
-Nitroso CHF2
-Pyrazolines and Their Transformation into CHF2
-Isoxazolines and -Pyrazoles. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700803] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Pavlo S. Lebed
- Department of Chemistry; Taras Shevchenko National University of Kyiv; Volodymyrska 64 01601 Kyiv Ukraine
- Enamine Ltd.; Chervonotkatska 78 02094 Kyiv Ukraine
- ChemBioCenter; Taras Shevchenko National University of Kyiv; Volodymyrska 64 01601 Kyiv Ukraine
| | - Johan Fenneteau
- Laboratoire de Chimie Organique; Institute of Chemistry; Biology and Innovation (CBI) UMR; 8281 ESPCI Paris; PSL Research University; 10 rue Vauquelin 75231 Paris Cedex 05 France
| | - Yong Wu
- Key Laboratory of Drug-Targeting of Education Ministry and Department of Medicinal Chemistry; West China School of Pharmacy; Sichuan University; 610041 Chengdu China
| | - Janine Cossy
- Laboratoire de Chimie Organique; Institute of Chemistry; Biology and Innovation (CBI) UMR; 8281 ESPCI Paris; PSL Research University; 10 rue Vauquelin 75231 Paris Cedex 05 France
| | - Pavel K. Mykhailiuk
- Department of Chemistry; Taras Shevchenko National University of Kyiv; Volodymyrska 64 01601 Kyiv Ukraine
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17
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Feraldi-Xypolia A, Fredj G, Tran G, Tsuchiya T, Vors JP, Mykhailiuk P, Gomez Pardo D, Cossy J. Synthesis of Functionalized 4-Fluoropyridazines. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201700216] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Alexandra Feraldi-Xypolia
- Laboratoire de Chimie Organique; Institute of Chemistry, Biology and Innovation (CBI), CNRS UMR 8231, ESPCI Paris; PSL Research University; 10 rue Vauquelin 75231- Paris Cedex 05 France
| | - Gregory Fredj
- Laboratoire de Chimie Organique; Institute of Chemistry, Biology and Innovation (CBI), CNRS UMR 8231, ESPCI Paris; PSL Research University; 10 rue Vauquelin 75231- Paris Cedex 05 France
| | - Gaël Tran
- Laboratoire de Chimie Organique; Institute of Chemistry, Biology and Innovation (CBI), CNRS UMR 8231, ESPCI Paris; PSL Research University; 10 rue Vauquelin 75231- Paris Cedex 05 France
| | - Tomoki Tsuchiya
- Bayer S.A.S., Small Molecule Research-Disease, Control Chemistry; 14 Impasse Pierre Baizet 69263 Lyon Cedex 09 France
| | - Jean-Pierre Vors
- Bayer S.A.S., Small Molecule Research-Disease, Control Chemistry; 14 Impasse Pierre Baizet 69263 Lyon Cedex 09 France
| | - Pavel Mykhailiuk
- Laboratoire de Chimie Organique; Institute of Chemistry, Biology and Innovation (CBI), CNRS UMR 8231, ESPCI Paris; PSL Research University; 10 rue Vauquelin 75231- Paris Cedex 05 France
- Organic Chemistry Department; Taras Shevchenko National University of Kyiv; Volodymyrska 64 01601 Kyiv Ukraine
- Enamine Ltd.; Matrosova 23 01103 Kyiv Ukraine
| | - Domingo Gomez Pardo
- Laboratoire de Chimie Organique; Institute of Chemistry, Biology and Innovation (CBI), CNRS UMR 8231, ESPCI Paris; PSL Research University; 10 rue Vauquelin 75231- Paris Cedex 05 France
| | - Janine Cossy
- Laboratoire de Chimie Organique; Institute of Chemistry, Biology and Innovation (CBI), CNRS UMR 8231, ESPCI Paris; PSL Research University; 10 rue Vauquelin 75231- Paris Cedex 05 France
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18
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Mykhailiuk PK. Heptafluoroisopropyl diazomethane (i-C3F7CHN2): in situ generation and synthesis of pyrazoles. Org Biomol Chem 2017; 15:7296-7301. [DOI: 10.1039/c7ob01579h] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel chemical reagent, heptafluoroisopropyl diazomethane (i-C3F7CHN2), has been generated in situ in aqueous media. It reacts with electron-deficient alkynes towards polyfluorinated pyrazoles that are important in agrochemistry.
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Affiliation(s)
- Pavel K. Mykhailiuk
- Taras Shevchenko National University of Kyiv
- Chemistry Department
- 01601 Kyiv
- Ukraine
- Enamine Ltd
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19
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Guo R, Zheng Y, Ma JA. Electrophilic Reaction of 2,2,2-Trifluorodiazoethane with the in Situ Generated N-Heterocyclic Carbenes: Access to N-Aminoguanidines. Org Lett 2016; 18:4170-3. [DOI: 10.1021/acs.orglett.6b01191] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Ran Guo
- Department of Chemistry,
Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, P. R. of China
| | - Yan Zheng
- Department of Chemistry,
Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, P. R. of China
| | - Jun-An Ma
- Department of Chemistry,
Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, P. R. of China
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20
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Kuciński K, Hreczycho G. Highly Efficient One-Step Synthesis ofN-Trimethylsiloxy Alkyl Imidothioates. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600768] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Krzysztof Kuciński
- Faculty of Chemistry; Adam Mickiewicz University in Poznań; Ul. Umultowska 89b 61-614 Poznań Poland
| | - Grzegorz Hreczycho
- Faculty of Chemistry; Adam Mickiewicz University in Poznań; Ul. Umultowska 89b 61-614 Poznań Poland
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21
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Jia M, Ma S. New Approaches to the Synthesis of Metal Carbenes. Angew Chem Int Ed Engl 2016; 55:9134-66. [DOI: 10.1002/anie.201508119] [Citation(s) in RCA: 227] [Impact Index Per Article: 28.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2015] [Revised: 12/05/2015] [Indexed: 01/07/2023]
Affiliation(s)
- Minqiang Jia
- Department of ChemistryFudan University 220 Handan Road Shanghai 200433 P.R. China
| | - Shengming Ma
- Department of ChemistryFudan University 220 Handan Road Shanghai 200433 P.R. China
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 P.R. China
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22
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Arkhipov AV, Arkhipov VV, Cossy J, Kovtunenko VO, Mykhailiuk PK. Unexpected Reactivity of Trifluoromethyl Diazomethane (CF3CHN2): Electrophilicity of the Terminal N-Atom. Org Lett 2016; 18:3406-9. [DOI: 10.1021/acs.orglett.6b01565] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Anton V. Arkhipov
- Enamine
Ltd., Chervonotkatska 78, Kyiv 02094, Ukraine
- Department
of Chemistry, National Taras Shevchenko University of Kyiv, Volodymyrska
64, Kyiv 01033, Ukraine
| | - Viatcheslav V. Arkhipov
- Enamine
Ltd., Chervonotkatska 78, Kyiv 02094, Ukraine
- Department
of Chemistry, National Taras Shevchenko University of Kyiv, Volodymyrska
64, Kyiv 01033, Ukraine
| | - Janine Cossy
- Laboratoire
de Chimie Organique, Institute of Chemistry, Biology and Innovation
(CBI), UMR 8231, ESPCI ParisTech/CNRS/PSL Research University, 10 rue Vauquelin, Paris 75231 Cedex 05, France
| | - Volodymir O. Kovtunenko
- Department
of Chemistry, National Taras Shevchenko University of Kyiv, Volodymyrska
64, Kyiv 01033, Ukraine
| | - Pavel K. Mykhailiuk
- Enamine
Ltd., Chervonotkatska 78, Kyiv 02094, Ukraine
- Department
of Chemistry, National Taras Shevchenko University of Kyiv, Volodymyrska
64, Kyiv 01033, Ukraine
- Laboratoire
de Chimie Organique, Institute of Chemistry, Biology and Innovation
(CBI), UMR 8231, ESPCI ParisTech/CNRS/PSL Research University, 10 rue Vauquelin, Paris 75231 Cedex 05, France
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23
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Affiliation(s)
- Minqiang Jia
- Department of ChemistryFudan University 220 Handan Road Shanghai 200433 P.R. China
| | - Shengming Ma
- Department of ChemistryFudan University 220 Handan Road Shanghai 200433 P.R. China
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 P.R. China
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24
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Zhao Y, Zhou Y, Liu J, Yang D, Tao L, Liu Y, Dong X, Liu J, Qu J. Synthesis of (Z)-α-Trifluoromethyl Alkenyl Triflate: A Scaffold for Diverse Trifluoromethylated Species. J Org Chem 2016; 81:4797-806. [DOI: 10.1021/acs.joc.6b00855] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Yilong Zhao
- State
Key Laboratory of Fine Chemicals, School of Pharmaceutical Science
and Technology, Dalian University of Technology, Dalian 116024, P.R. China
| | - Yuhan Zhou
- State
Key Laboratory of Fine Chemicals, School of Pharmaceutical Science
and Technology, Dalian University of Technology, Dalian 116024, P.R. China
| | - Juan Liu
- State
Key Laboratory of Fine Chemicals, School of Pharmaceutical Science
and Technology, Dalian University of Technology, Dalian 116024, P.R. China
| | - Dongmei Yang
- State
Key Laboratory of Fine Chemicals, School of Pharmaceutical Science
and Technology, Dalian University of Technology, Dalian 116024, P.R. China
| | - Liang Tao
- State
Key Laboratory of Fine Chemicals, School of Pharmaceutical Science
and Technology, Dalian University of Technology, Dalian 116024, P.R. China
| | - Yang Liu
- State
Key Laboratory of Fine Chemicals, School of Pharmaceutical Science
and Technology, Dalian University of Technology, Dalian 116024, P.R. China
| | - Xiaoliang Dong
- State
Key Laboratory of Fine Chemicals, School of Pharmaceutical Science
and Technology, Dalian University of Technology, Dalian 116024, P.R. China
| | - Jianhui Liu
- School
of Petroleum and Chemical Engineering, Dalian University of Technology, Panjin 124221, P.R. China
| | - Jingping Qu
- State
Key Laboratory of Fine Chemicals, School of Pharmaceutical Science
and Technology, Dalian University of Technology, Dalian 116024, P.R. China
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25
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Chen Z, Fan SQ, Zheng Y, Ma JA. Silver-catalyzed regioselective [3+2] cycloaddition of arene-diazonium salts with 2,2,2-trifluorodiazoethane (CF3CHN2): a facile access to 2-aryl-5-trifluoromethyltetrazoles. Chem Commun (Camb) 2016; 51:16545-8. [PMID: 26419899 DOI: 10.1039/c5cc07324c] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A silver-catalyzed regioselective [3+2] cycloaddition reaction of arenediazonium salts with 2,2,2-trifluorodiazoethane (CF3CHN2) is reported. Under mild conditions, a series of 2-aryl substituted 5-trifluoromethyltetrazoles were obtained in moderate to excellent yields with wide functional group compatibility. Furthermore, this cycloaddition reaction could also be performed in a one-pot diazotization/cycloaddition sequence from commercially available aniline derivatives.
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Affiliation(s)
- Zhen Chen
- Department of Chemistry, Tianjin University, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, P. R. China.
| | - Shuang-Qing Fan
- Department of Chemistry, Tianjin University, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, P. R. China.
| | - Yan Zheng
- Department of Chemistry, Tianjin University, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, P. R. China.
| | - Jun-An Ma
- Department of Chemistry, Tianjin University, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, P. R. China.
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26
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Pieber B, Kappe CO. Generation and Synthetic Application of Trifluoromethyl Diazomethane Utilizing Continuous Flow Technologies. Org Lett 2016; 18:1076-9. [PMID: 26902154 DOI: 10.1021/acs.orglett.6b00194] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
A continuous process for the synthesis and inline separation of anhydrous trifluoromethyl diazomethane in a single continuous flow process is presented. The diazo building block is generated from the corresponding amine and NaNO2 under acidic, aqueous conditions and subsequently diffuses through a gas-permeable membrane into an organic stream. To avoid storage and transportation of the hazardous compound, a representative downstream process in a packed-bed reactor yielding highly functionalized building blocks was developed.
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Affiliation(s)
- Bartholomäus Pieber
- Institute of Chemistry, University of Graz , NAWI Graz, Heinrichstrasse 28, A-8010 Graz, Austria
| | - C Oliver Kappe
- Institute of Chemistry, University of Graz , NAWI Graz, Heinrichstrasse 28, A-8010 Graz, Austria
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27
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Badenock JC, Gribble GW. Metal-Catalyzed Coupling with Heterocycles. ADVANCES IN HETEROCYCLIC CHEMISTRY 2016. [DOI: 10.1016/bs.aihch.2016.04.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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28
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Zhu CL, Ma JA, Cahard D. Trifluorodiazoethane (CF3CHN2) in the Uncatalyzed Cyclopropanation of 3-Arylmethylenebenzofuran-2(3 H)-ones. ASIAN J ORG CHEM 2015. [DOI: 10.1002/ajoc.201500409] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Chuan-Le Zhu
- UMR 6014 CNRS COBRA; Université de Rouen et INSA de Rouen; 1 Rue Tesnière 76821 Mont-Saint-Aignan Cedex France
- Department of Chemistry; Tianjin University; Tianjin 300072 China
| | - Jun-An Ma
- Department of Chemistry; Tianjin University; Tianjin 300072 China
| | - Dominique Cahard
- UMR 6014 CNRS COBRA; Université de Rouen et INSA de Rouen; 1 Rue Tesnière 76821 Mont-Saint-Aignan Cedex France
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29
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Luo H, Wu G, Zhang Y, Wang J. Silver(I)-CatalyzedN-Trifluoroethylation of Anilines andO-Trifluoroethylation of Amides with 2,2,2-Trifluorodiazoethane. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201507219] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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30
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Luo H, Wu G, Zhang Y, Wang J. Silver(I)‐Catalyzed
N
‐Trifluoroethylation of Anilines and
O
‐Trifluoroethylation of Amides with 2,2,2‐Trifluorodiazoethane. Angew Chem Int Ed Engl 2015; 54:14503-7. [DOI: 10.1002/anie.201507219] [Citation(s) in RCA: 121] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Revised: 08/25/2015] [Indexed: 01/28/2023]
Affiliation(s)
- Haiqing Luo
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871 (China)
- Department of Chemistry & Chemical Engineering, Gannan Normal University, Ganzhou 341000 (China)
| | - Guojiao Wu
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871 (China)
| | - Yan Zhang
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871 (China)
| | - Jianbo Wang
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871 (China)
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31
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Mykhailiuk PK. New Life for Diazoacetonitrile (N2CHCN): in situ Generation and Practical Synthesis of CN-Pyrazoles. European J Org Chem 2015. [DOI: 10.1002/ejoc.201501027] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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32
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Zhu CL, Yang LJ, Li S, Zheng Y, Ma JA. Brine-Stabilized 2,2,2-Trifluorodiazoethane and Its Application in the Synthesis of CF3–Substituted Cyclopropane α-Amino Acids. Org Lett 2015; 17:3442-5. [DOI: 10.1021/acs.orglett.5b01450] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Chuan-Le Zhu
- Department of Chemistry, Tianjin University, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, P. R. China
| | - Li-Jun Yang
- Department of Chemistry, Tianjin University, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, P. R. China
| | - Shen Li
- Department of Chemistry, Tianjin University, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, P. R. China
| | - Yan Zheng
- Department of Chemistry, Tianjin University, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, P. R. China
| | - Jun-An Ma
- Department of Chemistry, Tianjin University, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, P. R. China
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33
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Mykhailiuk PK. In Situ Generation of Difluoromethyl Diazomethane for [3+2] Cycloadditions with Alkynes. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201501529] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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34
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Mykhailiuk PK. In Situ generation of difluoromethyl diazomethane for [3+2] cycloadditions with alkynes. Angew Chem Int Ed Engl 2015; 54:6558-61. [PMID: 25801346 DOI: 10.1002/anie.201501529] [Citation(s) in RCA: 110] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Indexed: 12/15/2022]
Abstract
A novel approach to agrochemically important difluoromethyl-substituted pyrazoles has been developed based on the elusive reagent CF2 HCHN2 , which was synthesized (generated in situ) for the first time and employed in [3+2] cycloaddition reactions with alkynes. The reaction is extremely practical as it is a one-pot process, does not require a catalyst or the isolation of the potentially toxic and explosive gaseous intermediate, and proceeds in a common solvent, namely chloroform, in air. The reaction is also scalable and allows for the preparation of the target pyrazoles on gram scale.
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Affiliation(s)
- Pavel K Mykhailiuk
- Enamine Ltd. Matrosova 23, 01103 Kyiv (Ukraine) http://www.enamine.net. , .,Taras Shevchenko National University of Kyiv, Chemistry Department, Volodymyrska 64, 01601 Kyiv (Ukraine). ,
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35
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Wu L, Xie C, Zhou J, Mei H, Soloshonok VA, Han J, Pan Y. General asymmetric synthesis of 2,2,2-trifluoro-1-(1H-indol-3- and -2-yl)ethanamines. J Fluor Chem 2015. [DOI: 10.1016/j.jfluchem.2015.01.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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36
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Cai AJ, Zheng Y, Ma JA. Copper-triggered three-component reaction of CF3CHN2, nitriles, and aldehydes: highly diastereoselective synthesis of CF3-substituted oxazolines and vicinal amino alcohols. Chem Commun (Camb) 2015; 51:8946-9. [DOI: 10.1039/c5cc02749g] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A novel, catalytic, three-component C–C, C–N and C–O bond forming reaction to afford CF3-substituted oxazolines is realized.
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Affiliation(s)
- Ai-Jie Cai
- Department of Chemistry
- Tianjin University
- and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Tianjin 300072
- P. R. China
| | - Yan Zheng
- Department of Chemistry
- Tianjin University
- and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Tianjin 300072
- P. R. China
| | - Jun-An Ma
- Department of Chemistry
- Tianjin University
- and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Tianjin 300072
- P. R. China
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37
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Ma M, Zhu Y, Sun Q, Li X, Su J, Zhao L, Zhao Y, Qiu S, Yan W, Wang K, Wang R. The asymmetric synthesis of CF3-containing spiro[pyrrolidin-3,2′-oxindole] through the organocatalytic 1,3-dipolar cycloaddition reaction. Chem Commun (Camb) 2015; 51:8789-92. [DOI: 10.1039/c4cc10216a] [Citation(s) in RCA: 107] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A new strategy for the construction of optically active 5′-CF3 spiro[pyrrolidin-3,2′-oxindole] was described by using CF3CH2NH2 as a building block.
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38
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Mykhailiuk PK. Three-component synthesis of fluorinated pyrazoles from fluoroalkylamines, NaNO2 and electron-deficient alkynes. Org Biomol Chem 2015; 13:3438-45. [DOI: 10.1039/c4ob02670e] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Three-component synthesis of fluorinated pyrazoles.
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Affiliation(s)
- Pavel K. Mykhailiuk
- Enamine Ltd
- 01013 Kyiv
- Ukraine
- Faculty of Chemistry
- Taras Shevchenko National University of Kyiv
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39
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Wang S, Yang LJ, Zeng JL, Zheng Y, Ma JA. Silver-catalyzed [3 + 2] cycloaddition of isocyanides with diazo compounds: new regioselective access to 1,4-disubstituted-1,2,3-triazoles. Org Chem Front 2015. [DOI: 10.1039/c5qo00219b] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
An unprecedented silver-catalyzed 1,3-dipolar cycloaddition reaction of isocyanides with diazo compounds to afford 1,4-disubstituted 1,2,3-triazoles is realized.
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Affiliation(s)
- Shuai Wang
- Department of Chemistry
- Key Laboratory of Systems Bioengineering (The Ministry of Education)
- Tianjin University
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Tianjin 300072
| | - Li-Jun Yang
- Department of Chemistry
- Key Laboratory of Systems Bioengineering (The Ministry of Education)
- Tianjin University
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Tianjin 300072
| | - Jun-Liang Zeng
- Department of Chemistry
- Key Laboratory of Systems Bioengineering (The Ministry of Education)
- Tianjin University
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Tianjin 300072
| | - Yan Zheng
- Department of Chemistry
- Key Laboratory of Systems Bioengineering (The Ministry of Education)
- Tianjin University
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Tianjin 300072
| | - Jun-An Ma
- Department of Chemistry
- Key Laboratory of Systems Bioengineering (The Ministry of Education)
- Tianjin University
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Tianjin 300072
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40
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Wu L, Xie C, Mei H, Soloshonok VA, Han J, Pan Y. Asymmetric Friedel–Crafts Reactions of N-tert-Butylsulfinyl-3,3,3-trifluoroacetaldimines: General Access to Enantiomerically Pure Indoles Containing a 1-Amino-2,2,2-trifluoroethyl Group. J Org Chem 2014; 79:7677-81. [DOI: 10.1021/jo5012009] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lingmin Wu
- School
of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Chen Xie
- School
of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Haibo Mei
- School
of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Vadim A. Soloshonok
- Department
of Organic Chemistry I, Faculty of Chemistry, University of the Basque Country UPV/EHU, 20018 San Sebastian, Spain
- IKERBASQUE, Basque Foundation for Science, 48011 Bilbao, Spain
| | - Jianlin Han
- School
of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Yi Pan
- School
of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
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41
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Baruah D, Saikia UP, Pahari P, Dutta DK, Konwar D. Deprotection of oximes, imines, and azines to the corresponding carbonyls using Cu-nanoparticles on cellulose template as green reusable catalyst. RSC Adv 2014. [DOI: 10.1039/c4ra08803d] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Cellulose-supported Cu-nanoparticles efficiently catalyze the deprotection of oximes, imines, and azines in water under neutral condition.
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Affiliation(s)
- Diganta Baruah
- Synthetic Organic Chemistry Division
- CSIR-North East Institute of Science and Technology
- Jorhat, India
| | - Ujwal Pratim Saikia
- Synthetic Organic Chemistry Division
- CSIR-North East Institute of Science and Technology
- Jorhat, India
| | - Pallab Pahari
- Synthetic Organic Chemistry Division
- CSIR-North East Institute of Science and Technology
- Jorhat, India
| | - Dipak Kumar Dutta
- Materials Science Division
- CSIR-North East Institute of Science and Technology
- Jorhat, India
| | - Dilip Konwar
- Synthetic Organic Chemistry Division
- CSIR-North East Institute of Science and Technology
- Jorhat, India
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