51
|
Hu J, Hong H, Qin Y, Hu Y, Pu S, Liang G, Huang Y. Electrochemical Desulfurative Cyclization Accessing Oxazol-2-amine Derivatives via Intermolecular C-N/C-O Bond Formation. Org Lett 2021; 23:1016-1020. [PMID: 33475369 DOI: 10.1021/acs.orglett.0c04218] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A practical protocol has been established to access diverse oxazol-2-amine derivatives in one step via the electrochemical desulfurative cyclization of isothiocyanates and α-amino ketones. On the basis of the cycle of in situ generation of iodine/desulfurative cyclization/iodide anion regeneration, the reaction is performed under metal-free and external-oxidant-free electrolytic conditions to achieve the formation of intermolecular C-O and C-N bonds, providing oxazol-2-amines in moderate to excellent yields.
Collapse
Affiliation(s)
- Jinhui Hu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529090, P. R. China
| | - Huanliang Hong
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529090, P. R. China
| | - Yongwei Qin
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529090, P. R. China
| | - Yunfei Hu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529090, P. R. China
| | - Suyun Pu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529090, P. R. China
| | - Gen Liang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529090, P. R. China
| | - Yubing Huang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529090, P. R. China
| |
Collapse
|
52
|
He SY, Yan XW, Tu HY, Zhang XG. Palladium-catalyzed selective defluorinative arylation for the efficient stereospecific synthesis of ( E)-β-fluoroacrylamides. Org Chem Front 2021. [DOI: 10.1039/d1qo00721a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
A practical and efficient method for the synthesis of (E)-β-fluoroacrylamides was developed by the selective defluorinative arylation of trifluoropropanamides with arylboronic acids.
Collapse
Affiliation(s)
- Shi-Yu He
- Guangxi Key Laboratory of Calcium Carbonate Resources Comprehensive Utilization, Hezhou University, Hezhou 542899, China
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Xiao-Wei Yan
- Guangxi Key Laboratory of Calcium Carbonate Resources Comprehensive Utilization, Hezhou University, Hezhou 542899, China
| | - Hai-Yong Tu
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Xing-Guo Zhang
- Guangxi Key Laboratory of Calcium Carbonate Resources Comprehensive Utilization, Hezhou University, Hezhou 542899, China
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| |
Collapse
|
53
|
Zou Z, Zhang W, Wang Y, Pan Y. Recent advances in electrochemically driven radical fluorination and fluoroalkylation. Org Chem Front 2021. [DOI: 10.1039/d1qo00054c] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Electrochemical fluorination (ECF) refers to the introduction of fluorine-containing moieties into organic molecules under electrochemical conditions.
Collapse
Affiliation(s)
- Zhenlei Zou
- State Key Laboratory of Coordination Chemistry
- Jiangsu Key Laboratory of Advanced Organic Materials
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210023
| | - Weigang Zhang
- State Key Laboratory of Coordination Chemistry
- Jiangsu Key Laboratory of Advanced Organic Materials
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210023
| | - Yi Wang
- State Key Laboratory of Coordination Chemistry
- Jiangsu Key Laboratory of Advanced Organic Materials
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210023
| | - Yi Pan
- State Key Laboratory of Coordination Chemistry
- Jiangsu Key Laboratory of Advanced Organic Materials
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210023
| |
Collapse
|
54
|
Zhao Y, Zhang Y, Liu Y, Zhu T, Wu J. Photoredox-catalyzed direct C(sp 2)–H difluoromethylation of enamides or heterocycles with [bis(difluoroacetoxy)iodo]benzene. Org Chem Front 2021. [DOI: 10.1039/d1qo00995h] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A photoredox-catalyzed direct C(sp2)–H difluoromethylation of enamides and heterocycles is accomplished by using easily accessible [bis(difluoroacetoxy)iodo]benzene as the CF2H source.
Collapse
Affiliation(s)
- Yun Zhao
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China
| | - Yan Zhang
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China
| | - Yating Liu
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China
| | - Tonghao Zhu
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China
| | - Jie Wu
- School of Pharmaceutical and Materials Engineering & Institute for Advanced Studies, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
| |
Collapse
|
55
|
Claraz A, Djian A, Masson G. Electrochemical tandem trifluoromethylation of allylamines/formal (3 + 2)-cycloaddition for the rapid access to CF3-containing imidazolines and oxazolidines. Org Chem Front 2021. [DOI: 10.1039/d0qo01307b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A straightforward and environmentally friendly synthesis of CF3-containing imidazolines and oxazolidines has been developed through an electrochemical three-component reaction among allylamines, the Langlois reagent, and nitrile or carbonyl compounds.
Collapse
Affiliation(s)
- Aurélie Claraz
- Institut de Chimie des Substances Naturelles
- Université Paris Saclay
- CNRS
- UPR2301
- 91198 Gif-sur-Yvette cedex
| | - Aurélie Djian
- Institut de Chimie des Substances Naturelles
- Université Paris Saclay
- CNRS
- UPR2301
- 91198 Gif-sur-Yvette cedex
| | - Géraldine Masson
- Institut de Chimie des Substances Naturelles
- Université Paris Saclay
- CNRS
- UPR2301
- 91198 Gif-sur-Yvette cedex
| |
Collapse
|
56
|
Shen XQ, Wang SQ, Fan D, Zhang XG, Tu HY. Copper-Catalyzed Selective Defluorinative Sulfuration of Trifluoropropanamides Leading to α-Fluorothioacrylamides. J Org Chem 2020; 86:1591-1600. [PMID: 33372521 DOI: 10.1021/acs.joc.0c02436] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
A practical and efficient method for the synthesis of α-fluorothioacrylamide was developed from selective defluorinative sulfuration of trifluoropropanamides with disulfides. The N-chelation-assisted copper-catalyzed defluorination and sulfurization reactions feature excellent functional group tolerance and incorporation of both sulfur atoms of disulfides into acrylamides.
Collapse
Affiliation(s)
- Xiao-Qin Shen
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Sui-Qian Wang
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Dongfeng Fan
- Zhejiang Huafon Thermoplastic Polyurethane Company Limited, Ruian 325200, China
| | - Xing-Guo Zhang
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China.,Guangxi Key Laboratory of Calcium Carbonate Resources Comprehensive Utilization, Hezhou University, Hezhou 542899, China
| | - Hai-Yong Tu
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| |
Collapse
|
57
|
Yang J, Zhu S, Wang F, Qing F, Chu L. Silver‐Enabled General Radical Difluoromethylation Reaction with TMSCF
2
H. Angew Chem Int Ed Engl 2020; 60:4300-4306. [DOI: 10.1002/anie.202014587] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Indexed: 11/08/2022]
Affiliation(s)
- Jun Yang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Chemistry Chemical Engineering and Biotechnology Center for Advanced Low-Dimension Materials Donghua University Shanghai 201620 China
| | - Shengqing Zhu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Chemistry Chemical Engineering and Biotechnology Center for Advanced Low-Dimension Materials Donghua University Shanghai 201620 China
| | - Fang Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Chemistry Chemical Engineering and Biotechnology Center for Advanced Low-Dimension Materials Donghua University Shanghai 201620 China
| | - Feng‐Ling Qing
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Chemistry Chemical Engineering and Biotechnology Center for Advanced Low-Dimension Materials Donghua University Shanghai 201620 China
| | - Lingling Chu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Chemistry Chemical Engineering and Biotechnology Center for Advanced Low-Dimension Materials Donghua University Shanghai 201620 China
| |
Collapse
|
58
|
Yang J, Zhu S, Wang F, Qing F, Chu L. Silver‐Enabled General Radical Difluoromethylation Reaction with TMSCF
2
H. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202014587] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Jun Yang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Chemistry Chemical Engineering and Biotechnology Center for Advanced Low-Dimension Materials Donghua University Shanghai 201620 China
| | - Shengqing Zhu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Chemistry Chemical Engineering and Biotechnology Center for Advanced Low-Dimension Materials Donghua University Shanghai 201620 China
| | - Fang Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Chemistry Chemical Engineering and Biotechnology Center for Advanced Low-Dimension Materials Donghua University Shanghai 201620 China
| | - Feng‐Ling Qing
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Chemistry Chemical Engineering and Biotechnology Center for Advanced Low-Dimension Materials Donghua University Shanghai 201620 China
| | - Lingling Chu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Chemistry Chemical Engineering and Biotechnology Center for Advanced Low-Dimension Materials Donghua University Shanghai 201620 China
| |
Collapse
|
59
|
Sandeep M, Shantharjun B, Pradeep Kumar G, Rajender Reddy K. Oxidative Copper‐Catalyzed Regioselective Trifluoromethylation of Fused Imidazo[1,5‐
a
]‐
N
‐heteroarenes using Langlois Reagent. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001266] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Mummadi Sandeep
- Catalysis and Fine Chemicals Division, CSIR– Indian Institute of Chemical Technology, Tarnaka Hyderabad 500007 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002, U.P India
| | - Bangarigalla Shantharjun
- Catalysis and Fine Chemicals Division, CSIR– Indian Institute of Chemical Technology, Tarnaka Hyderabad 500007 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002, U.P India
| | - Geetala Pradeep Kumar
- Catalysis and Fine Chemicals Division, CSIR– Indian Institute of Chemical Technology, Tarnaka Hyderabad 500007 India
- IICT-RMIT Joint Research Centre CSIR-IICT, Tarnaka Hyderabad 500007 India
| | - Kallu Rajender Reddy
- Catalysis and Fine Chemicals Division, CSIR– Indian Institute of Chemical Technology, Tarnaka Hyderabad 500007 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002, U.P India
- IICT-RMIT Joint Research Centre CSIR-IICT, Tarnaka Hyderabad 500007 India
| |
Collapse
|
60
|
Lin L, Liang Q, Kong X, Chen Q, Xu B. Electrochemical Tandem Fluoroalkylation-Cyclization of Vinyl Azides: Access to Trifluoroethylated and Difluoroethylated N-Heterocycles. J Org Chem 2020; 85:15708-15716. [PMID: 33226809 DOI: 10.1021/acs.joc.0c02213] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A transition-metal- and oxidant-free electrochemical strategy for radical fluoroalkylation of vinyl azides was developed. The reaction was carried out under mild conditions by using inexpensive and bench-stable RfSO2Na (Rf = CF3, CF2H) as fluorination reagents. Depending on the starting material, both the electrochemical radical cyclization and dearomatization products could be obtained. This method provides a green and safe approach to synthesize fluorinated nitrogen heterocycles.
Collapse
Affiliation(s)
- Long Lin
- Key Lab of Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China
| | - Qi Liang
- Key Lab of Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China
| | - Xianqiang Kong
- Key Lab of Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China.,School of Chemical Engineering and Materials, Changzhou Institute of Technology, No. 666 Liaohe Road, Changzhou 213032, China
| | - Qianjin Chen
- Key Lab of Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China
| | - Bo Xu
- Key Lab of Science and Technology of Eco-Textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China
| |
Collapse
|
61
|
Che F, Zhong J, Yu L, Ma C, Yu C, Wang M, Hou Z, Zhang Y. Synthesis of Dichlorocyanomethyl‐Functionalized Oxindoles by Cascade Reactions Initiated by Copper(I)‐Catalytically Generated Dichlorocyanomethyl Radical. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000600] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Fengrui Che
- College of Chemistry and Chemical Engineering Qingdao University 308 Ningxia Road Qingdao 266071 People's Republic of China
| | - Jiangbin Zhong
- College of Chemistry and Chemical Engineering Qingdao University 308 Ningxia Road Qingdao 266071 People's Republic of China
| | - Linhan Yu
- College of Chemistry and Chemical Engineering Qingdao University 308 Ningxia Road Qingdao 266071 People's Republic of China
| | - Chaopeng Ma
- College of Chemistry and Chemical Engineering Qingdao University 308 Ningxia Road Qingdao 266071 People's Republic of China
| | - Chunzheng Yu
- College of Chemistry and Chemical Engineering Qingdao University 308 Ningxia Road Qingdao 266071 People's Republic of China
| | - Maorong Wang
- State Key Laboratory of Bio-Fibers and Eco-Textiles Qingdao University 308 Ningxia Road Qingdao 266071 People's Republic of China
| | - Zhichen Hou
- College of Chemistry and Chemical Engineering Qingdao University 308 Ningxia Road Qingdao 266071 People's Republic of China
| | - Yuexia Zhang
- College of Chemistry and Chemical Engineering Qingdao University 308 Ningxia Road Qingdao 266071 People's Republic of China
| |
Collapse
|
62
|
Affiliation(s)
- Rasmi P. Bhaskaran
- Department of Chemistry National Institute of Technology Karnataka (NITK) Mangalore, Surathkal 575025 India
| | - Beneesh P. Babu
- Department of Chemistry National Institute of Technology Karnataka (NITK) Mangalore, Surathkal 575025 India
| |
Collapse
|
63
|
Syntheses of 3,3-Disubstituted Dihydrobenzofurans, Indolines, Indolinones and Isochromanes by Palladium-Catalyzed Tandem Reaction Using Pd(PPh3)2Cl2/(±)-BINAP as a Catalytic System. Catalysts 2020. [DOI: 10.3390/catal10091084] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
A general procedure for the tandem arylation reaction of arylbromide with heteroaryl compounds was developed by using Pd(PPh3)2Cl2/(±)-BINAP (1,1′-Binaphthalene-2,2′-diylbis (diphenylphosphane)) as catalytic system. Both sulphur- and oxygen-containing heterocycles were also employed as an efficient reagent for arylation, which gave moderate to excellent yields with moderate to good regioselectivities (5:1 to > 20:1 ir (isomer ratio)). Except for dihydrobenzofurans, indolines and indolinones, this type of tandem reaction was also expanded to synthesize isochromanes. The synthesized new compounds were well characterized through different spectroscopic techniques, such as 1H and 13C NMR (nuclear magnetic resonance), and mass spectral analysis.
Collapse
|
64
|
Abstract
In spite of only a few naturally occurring products having one or more fluorine atoms, organofluorine compounds have been widely utilized in pharmaceutical, agrochemical, and functional material science fields due to the characteristic properties of the fluorine atom. Therefore, the development of new methods for the introduction of fluorine-containing functional groups has been a long-standing research topic. This article discusses our contributions to this area. The first topic is on the trifluoromethylations of C-C multiple bonds using Togni reagent based on our working hypothesis that hypervalent iodine could be activated by coordination of the carbonyl moiety to the Lewis acid catalyst. The second topic relates to asymmetric fluorofunctionalization of alkenes. A newly designed phase-transfer catalyst consisting of a carboxylate anion functioning as a phase-transfer agent and a primary hydroxyl group as a site that captures the anionic substrate was revealed to be an effective catalyst for asymmetric fluorolactonization. Inspired by the mechanistic studies of fluorolactonization, we produced a linked binaphthyl dicarboxylate catalyst, which catalyzes the 6-endo-fluorocyclization and the deprotonative fluorination of allylic amides in a highly enantioselective manner. The third topic is on C-H fluorofunctionalizations using either catalysis or photoactivation. Benzylic trifluoromethylation, which is still a rare reaction, using Togni reagent and aromatic C-H trifluoromethylation using Umemoto reagent under simple photoirradiation conditions were achieved. In addition, the Csp3-H fluorination of alkyl phthalimide derivatives is demonstrated.
Collapse
|
65
|
Yuan Y, Zheng Y, Xu B, Liao J, Bu F, Wang S, Hu JG, Lei A. Mn-Catalyzed Electrochemical Radical Cascade Cyclization toward the Synthesis of Benzo[4,5]imidazo[2,1-a]isoquinolin-6(5H)-one Derivatives. ACS Catal 2020. [DOI: 10.1021/acscatal.0c01324] [Citation(s) in RCA: 69] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Yong Yuan
- National Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang 330022, P. R. China
- College of Chemistry and Molecular Sciences, Institute for Advanced Studies, Wuhan University, Wuhan 430072, P. R. China
| | - Yongfu Zheng
- National Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang 330022, P. R. China
| | - Bizhen Xu
- National Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang 330022, P. R. China
| | - Jiapeng Liao
- National Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang 330022, P. R. China
| | - Faxiang Bu
- College of Chemistry and Molecular Sciences, Institute for Advanced Studies, Wuhan University, Wuhan 430072, P. R. China
| | - Shengchun Wang
- College of Chemistry and Molecular Sciences, Institute for Advanced Studies, Wuhan University, Wuhan 430072, P. R. China
| | - Jian-Guo Hu
- National Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang 330022, P. R. China
| | - Aiwen Lei
- National Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang 330022, P. R. China
- College of Chemistry and Molecular Sciences, Institute for Advanced Studies, Wuhan University, Wuhan 430072, P. R. China
| |
Collapse
|
66
|
Lu Z, Hennis O, Gentry J, Xu B, Hammond GB. Base-Promoted Radical Azofluoromethylation of Unactivated Alkenes. Org Lett 2020; 22:4383-4388. [PMID: 32400165 DOI: 10.1021/acs.orglett.0c01395] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The base-induced reaction of aryl diazonium salts with commercially available CF3SO2Na/CF2HSO2Na allows for the generation of the corresponding diazene radicals along with fluoromethyl radicals. The addition of fluoromethyl radicals to alkenes with subsequent diazene trapping provides the azofluoromethylation products in good to excellent yields. This metal-free method under mild reaction conditions has broad functional group compatibility and is applicable in the late-stage modification of various natural products and bioactive molecules.
Collapse
Affiliation(s)
- Zhichao Lu
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292, United States
| | - Olivia Hennis
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292, United States
| | - Joseph Gentry
- Williams College, Williamstown, Massachusetts 01267, United States
| | - Bo Xu
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, 2999 North Renmin Lu, Shanghai 201620, China
| | - Gerald B Hammond
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292, United States
| |
Collapse
|
67
|
Xu Z, Li Y, Mo G, Zheng Y, Zeng S, Sun PH, Ruan Z. Electrochemical Oxidative Phosphorylation of Aldehyde Hydrazones. Org Lett 2020; 22:4016-4020. [DOI: 10.1021/acs.orglett.0c01343] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhongnan Xu
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, P.R. China
| | - Yueheng Li
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, P.R. China
| | - Guangquan Mo
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, P.R. China
| | - Yucheng Zheng
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, P.R. China
| | - Shaogao Zeng
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education, College of Pharmacy, Jinan University, Guangzhou 510632, P.R. China
| | - Ping-Hua Sun
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education, College of Pharmacy, Jinan University, Guangzhou 510632, P.R. China
| | - Zhixiong Ruan
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, P.R. China
| |
Collapse
|
68
|
Kharma A, Jacob C, Bozzi ÍAO, Jardim GAM, Braga AL, Salomão K, Gatto CC, Silva MFS, Pessoa C, Stangier M, Ackermann L, da Silva Júnior EN. Electrochemical Selenation/Cyclization of Quinones: A Rapid, Green and Efficient Access to Functionalized Trypanocidal and Antitumor Compounds. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000216] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Ammar Kharma
- Institute of Exact Sciences, Department of Chemistry Federal University of Minas Gerais, UFMG 31270‐901 Belo Horizonte MG Brazil
- Division of Bioorganic Chemistry School of Pharmacy University of Saarland 66123 Saarbruecken Germany
| | - Claus Jacob
- Division of Bioorganic Chemistry School of Pharmacy University of Saarland 66123 Saarbruecken Germany
| | - Ícaro A. O. Bozzi
- Institute of Exact Sciences, Department of Chemistry Federal University of Minas Gerais, UFMG 31270‐901 Belo Horizonte MG Brazil
| | - Guilherme A. M. Jardim
- Department of Chemistry Federal University of Santa Catarina 88040‐900 Florianópolis SC Brazil
| | - Antonio L. Braga
- Department of Chemistry Federal University of Santa Catarina 88040‐900 Florianópolis SC Brazil
| | - Kelly Salomão
- Oswaldo Cruz Institute FIOCRUZ 21045‐900 Rio de Janeiro RJ Brazil
| | - Claudia C. Gatto
- Institute of Chemistry University of Brasilia 70904‐970 Brasilia DF Brazil
| | - Maria Francilene S. Silva
- Department of Physiology and Pharmacology School of Pharmacy Federal University of Ceará 60430‐270 Fortaleza CE Brazil
| | - Claudia Pessoa
- Department of Physiology and Pharmacology School of Pharmacy Federal University of Ceará 60430‐270 Fortaleza CE Brazil
| | - Maximilian Stangier
- Institut für Organische und Biomolekulare Chemie Georg‐August‐Universität Tammannstraße 2 37077 Göttingen Germany
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie Georg‐August‐Universität Tammannstraße 2 37077 Göttingen Germany
| | - Eufrânio N. da Silva Júnior
- Institute of Exact Sciences, Department of Chemistry Federal University of Minas Gerais, UFMG 31270‐901 Belo Horizonte MG Brazil
| |
Collapse
|
69
|
Li J, Yang P, Xie X, Jiang S, Tao L, Li Z, Lu C, Liu W. Catalyst‐Free Electrosynthesis of Benzimidazolones through Intramolecular Oxidative C−N Coupling. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000198] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Jiang‐Sheng Li
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, School of Chemistry and Food EngineeringChangsha University of Science & Technology Changsha 410114 People's Republic of China
| | - Pan‐Pan Yang
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, School of Chemistry and Food EngineeringChangsha University of Science & Technology Changsha 410114 People's Republic of China
| | - Xin‐Yun Xie
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, School of Chemistry and Food EngineeringChangsha University of Science & Technology Changsha 410114 People's Republic of China
| | - Si Jiang
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, School of Chemistry and Food EngineeringChangsha University of Science & Technology Changsha 410114 People's Republic of China
| | - Li Tao
- State Grid Hunan Electric Power Company Limited Research Institute Changsha 410004 People's Republic of China
| | - Zhi‐Wei Li
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, School of Chemistry and Food EngineeringChangsha University of Science & Technology Changsha 410114 People's Republic of China
| | - Cui‐Hong Lu
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, School of Chemistry and Food EngineeringChangsha University of Science & Technology Changsha 410114 People's Republic of China
| | - Wei‐Dong Liu
- National Engineering Research Center for AgrochemicalsHunan Research Institute of Chemical Industry Changsha 410007 People's Republic of China
| |
Collapse
|
70
|
Qiu Y, Scheremetjew A, Finger LH, Ackermann L. Electrophotocatalytic Undirected C-H Trifluoromethylations of (Het)Arenes. Chemistry 2020; 26:3241-3246. [PMID: 31875327 PMCID: PMC7155051 DOI: 10.1002/chem.201905774] [Citation(s) in RCA: 96] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Indexed: 12/31/2022]
Abstract
Electrophotochemistry has enabled arene C-H trifluoromethylation with the Langlois reagent CF3 SO2 Na under mild reaction conditions. The merger of electrosynthesis and photoredox catalysis provided a chemical oxidant-free approach for the generation of the CF3 radical. The electrophotochemistry was carried out in an operationally simple manner, setting the stage for challenging C-H trifluoromethylations of unactivated arenes and heteroarenes. The robust nature of the electrophotochemical manifold was reflected by a wide scope, including electron-rich and electron-deficient benzenes, as well as naturally occurring heteroarenes. Electrophotochemical C-H trifluoromethylation was further achieved in flow with a modular electro-flow-cell equipped with an in-operando monitoring unit for on-line flow-NMR spectroscopy, providing support for the single electron transfer processes.
Collapse
Affiliation(s)
- Youai Qiu
- Institut für Organische und Biomolekulare ChemieGeorg-August-Universität GöttingenTammannstrasse 237077GöttingenGermany
| | - Alexej Scheremetjew
- Institut für Organische und Biomolekulare ChemieGeorg-August-Universität GöttingenTammannstrasse 237077GöttingenGermany
| | - Lars H. Finger
- Institut für Organische und Biomolekulare ChemieGeorg-August-Universität GöttingenTammannstrasse 237077GöttingenGermany
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare ChemieGeorg-August-Universität GöttingenTammannstrasse 237077GöttingenGermany
| |
Collapse
|
71
|
Li Z, Jiao L, Sun Y, He Z, Wei Z, Liao W. CF
3
SO
2
Na as a Bifunctional Reagent: Electrochemical Trifluoromethylation of Alkenes Accompanied by SO
2
Insertion to Access Trifluoromethylated Cyclic N‐Sulfonylimines. Angew Chem Int Ed Engl 2020; 59:7266-7270. [DOI: 10.1002/anie.202001262] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Indexed: 11/07/2022]
Affiliation(s)
- Zheng Li
- Department of Organic Chemistry College of Chemistry Jilin University Changchun 130012 P. R. China
| | - Lingcong Jiao
- Department of Organic Chemistry College of Chemistry Jilin University Changchun 130012 P. R. China
| | - Yunhai Sun
- Department of Organic Chemistry College of Chemistry Jilin University Changchun 130012 P. R. China
| | - Zeying He
- Department of Organic Chemistry College of Chemistry Jilin University Changchun 130012 P. R. China
| | - Zhonglin Wei
- Department of Organic Chemistry College of Chemistry Jilin University Changchun 130012 P. R. China
| | - Wei‐Wei Liao
- Department of Organic Chemistry College of Chemistry Jilin University Changchun 130012 P. R. China
| |
Collapse
|
72
|
Li Z, Jiao L, Sun Y, He Z, Wei Z, Liao W. CF
3
SO
2
Na as a Bifunctional Reagent: Electrochemical Trifluoromethylation of Alkenes Accompanied by SO
2
Insertion to Access Trifluoromethylated Cyclic N‐Sulfonylimines. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202001262] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Zheng Li
- Department of Organic Chemistry College of Chemistry Jilin University Changchun 130012 P. R. China
| | - Lingcong Jiao
- Department of Organic Chemistry College of Chemistry Jilin University Changchun 130012 P. R. China
| | - Yunhai Sun
- Department of Organic Chemistry College of Chemistry Jilin University Changchun 130012 P. R. China
| | - Zeying He
- Department of Organic Chemistry College of Chemistry Jilin University Changchun 130012 P. R. China
| | - Zhonglin Wei
- Department of Organic Chemistry College of Chemistry Jilin University Changchun 130012 P. R. China
| | - Wei‐Wei Liao
- Department of Organic Chemistry College of Chemistry Jilin University Changchun 130012 P. R. China
| |
Collapse
|
73
|
Mi X, Kong Y, Yang H, Zhang J, Pi C, Cui X. Visible-Light-Promoted Metal-Free C-H Trifluoromethylation of Imidazopyridines. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901860] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Xia Mi
- College of Pharmacy; Henan University of Chinese Medicine; 450046 Zhengzhou P. R. China
| | - Yuanfang Kong
- College of Pharmacy; Henan University of Chinese Medicine; 450046 Zhengzhou P. R. China
| | - Huaixia Yang
- College of Pharmacy; Henan University of Chinese Medicine; 450046 Zhengzhou P. R. China
| | - Jingyu Zhang
- College of Pharmacy; Henan University of Chinese Medicine; 450046 Zhengzhou P. R. China
| | - Chao Pi
- College of Chemistry; Henan Key Laboratory of Chemical Biology and Organic Chemistry; Zhengzhou University; 450052 Zhengzhou P. R. China
| | - Xiuling Cui
- College of Chemistry; Henan Key Laboratory of Chemical Biology and Organic Chemistry; Zhengzhou University; 450052 Zhengzhou P. R. China
| |
Collapse
|
74
|
Claraz A, Courant T, Masson G. Electrochemical Intramolecular Oxytrifluoromethylation of N-Tethered Alkenyl Alcohols: Synthesis of Functionalized Morpholines. Org Lett 2020; 22:1580-1584. [DOI: 10.1021/acs.orglett.0c00176] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Aurélie Claraz
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301,
Université Paris-Sud, Université Paris-Saclay, 1, av. de la Terrasse, Gif-sur-Yvette 91198 Cedex, France
| | - Thibaut Courant
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301,
Université Paris-Sud, Université Paris-Saclay, 1, av. de la Terrasse, Gif-sur-Yvette 91198 Cedex, France
| | - Géraldine Masson
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301,
Université Paris-Sud, Université Paris-Saclay, 1, av. de la Terrasse, Gif-sur-Yvette 91198 Cedex, France
| |
Collapse
|
75
|
Abstract
To improve the efficacy of molecular syntheses, researchers wish to capitalize upon the selective modification of otherwise inert C-H bonds. The past two decades have witnessed considerable advances in coordination chemistry that have set the stage for transformative tools for C-H functionalizations. Particularly, oxidative C-H/C-H and C-H/Het-H transformations have gained major attention because they avoid all elements of substrate prefunctionalization. Despite considerable advances, oxidative C-H activations have been dominated by precious transition metal catalysts based on palladium, ruthenium, iridium, and rhodium, thus compromising the sustainable nature of the overall C-H activation approach. The same holds true for the predominant use of stoichiometric chemical oxidants for the regeneration of the active catalyst, prominently featuring hypervalent iodine(III), copper(II), and silver(I) oxidants. Thereby, stoichiometric quantities of undesired byproducts are generated, which are preventive for applications of C-H activation on scale. In contrast, the elegant merger of homogeneous metal-catalyzed C-H activation with molecular electrosynthesis bears the unique power to achieve outstanding levels of oxidant and resource economy. Thus, in contrast to classical electrosyntheses by substrate control, metalla-electrocatalysis holds huge and largely untapped potential for oxidative C-H activations with unmet site selectivities by means of catalyst control. While indirect electrolysis using precious palladium complexes has been realized, less toxic and less expensive base metal catalysts feature distinct beneficial assets toward sustainable resource economy. In this Account, I summarize the emergence of electrocatalyzed C-H activation by earth-abundant 3d base metals and beyond, with a topical focus on contributions from our laboratories through November 2019. Thus, cobalt electrocatalysis was identified as a particularly powerful platform for a wealth of C-H transformations, including C-H oxygenations and C-H nitrogenations as well as C-H activations with alkynes, alkenes, allenes, isocyanides, and carbon monoxide, among others. As complementary tools, catalysts based on nickel, copper, and very recently iron have been devised for metalla-electrocatalyzed C-H activations. Key to success were detailed mechanistic insights, prominently featuring oxidation-induced reductive elimination scenarios. Likewise, the development of methods that make use of weak O-coordination benefited from crucial insights into the catalyst's modes of action by experiment, in operando spectroscopy, and computation. Overall, metalla-electrocatalyzed C-H activations have thereby set the stage for molecular syntheses with unique levels of resource economy. These electrooxidative C-H transformations overall avoid the use of chemical oxidants and are frequently characterized by improved chemoselectivities. Hence, the ability to dial in the redox potential at the minimum level required for the desired transformation renders electrocatalysis an ideal platform for the functionalization of structurally complex molecules with sensitive functional groups. This strategy was, inter alia, successfully applied to scale-up by continuous flow and the step-economical assembly of polycyclic aromatic hydrocarbons.
Collapse
Affiliation(s)
- Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität, Tammannstrasse 2, 37077 Göttingen, Germany
| |
Collapse
|
76
|
Liu C, Jiang Q, Lin Y, Fang Z, Guo K. C- to N-Center Remote Heteroaryl Migration via Electrochemical Initiation of N Radical by Organic Catalyst. Org Lett 2020; 22:795-799. [PMID: 31922422 DOI: 10.1021/acs.orglett.9b04141] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Herein an exogenous oxidant- and metal-free electrochemical heteroaryl migration triggered by N radicals to construct new N-C bonds was developed. This methodology features a high atom economy and utilization rate of energy, and it is insensitive to water and air. Moreover, a user-friendly undivided cell was employed. The use of an organic catalyst makes it more efficient, green, and practical.
Collapse
Affiliation(s)
- Chengkou Liu
- College of Biotechnology and Pharmaceutical Engineering , Nanjing Tech University , Nanjing 211816 , China
| | - Qiang Jiang
- College of Biotechnology and Pharmaceutical Engineering , Nanjing Tech University , Nanjing 211816 , China
| | - Yang Lin
- College of Biotechnology and Pharmaceutical Engineering , Nanjing Tech University , Nanjing 211816 , China
| | - Zheng Fang
- College of Biotechnology and Pharmaceutical Engineering , Nanjing Tech University , Nanjing 211816 , China
| | - Kai Guo
- College of Biotechnology and Pharmaceutical Engineering , Nanjing Tech University , Nanjing 211816 , China.,State Key Laboratory of Materials-Oriented Chemical Engineering , Nanjing Tech University , Nanjing 211816 , China
| |
Collapse
|
77
|
Zhang YA, Ding Z, Liu P, Guo WS, Wen LR, Li M. Access to SCN-containing thiazolines via electrochemical regioselective thiocyanothiocyclization of N-allylthioamides. Org Chem Front 2020. [DOI: 10.1039/d0qo00300j] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
An electrochemical thiocyclization of N-allylthioamides has been developed for the synthesis of SCN-containing 2-thiazolines and NCS-containing thiazines.
Collapse
Affiliation(s)
- Yan-An Zhang
- State Key Laboratory Base of Eco-Chemical Engineering
- College of Chemistry and Molecular Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
- P. R. China
| | - Zhong Ding
- State Key Laboratory Base of Eco-Chemical Engineering
- College of Chemistry and Molecular Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
- P. R. China
| | - Peng Liu
- State Key Laboratory Base of Eco-Chemical Engineering
- College of Chemistry and Molecular Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
- P. R. China
| | - Wei-Si Guo
- State Key Laboratory Base of Eco-Chemical Engineering
- College of Chemistry and Molecular Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
- P. R. China
| | - Li-Rong Wen
- State Key Laboratory Base of Eco-Chemical Engineering
- College of Chemistry and Molecular Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
- P. R. China
| | - Ming Li
- State Key Laboratory Base of Eco-Chemical Engineering
- College of Chemistry and Molecular Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
- P. R. China
| |
Collapse
|
78
|
He TJ, Zhong WQ, Huang JM. The synthesis of sulfonated 4H-3,1-benzoxazines via an electro-chemical radical cascade cyclization. Chem Commun (Camb) 2020; 56:2735-2738. [DOI: 10.1039/c9cc09551a] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
We achieved sulfonated 4H-3,1-benzoxazines under ambient conditions without any metals and external chemical oxidants via electrochemical radical cascade cyclizations.
Collapse
Affiliation(s)
- Tian-Jun He
- Key Laboratory of Functional Molecular Engineering of Guangdong Province
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou
- China
| | - Wei-Qiang Zhong
- Key Laboratory of Functional Molecular Engineering of Guangdong Province
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou
- China
| | - Jing-Mei Huang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou
- China
| |
Collapse
|
79
|
Xu Z, Wang Y, Zheng Y, Huang Z, Ackermann L, Ruan Z. Manganese- and rhenium-catalyzed C–H enaminylation: expedient access to novel indole–purine hybrids with anti-tumor bioactivities. Org Chem Front 2020. [DOI: 10.1039/d0qo01120g] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The C–H enaminylation of novel 6-(1H-indol-1-yl)-purines with ketenimines was accomplished by means of aqueous manganese and rhenium catalysis, which sets the stage for the facile synthesis of indole–purine hybrids with anti-tumor bioactivities.
Collapse
Affiliation(s)
- Zhongnan Xu
- The Fifth Affiliated Hospital
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease
- School of Pharmaceutical Sciences
- Guangzhou Medical University
- Guangzhou
| | - Yuqing Wang
- The Fifth Affiliated Hospital
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease
- School of Pharmaceutical Sciences
- Guangzhou Medical University
- Guangzhou
| | - Yucheng Zheng
- The Fifth Affiliated Hospital
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease
- School of Pharmaceutical Sciences
- Guangzhou Medical University
- Guangzhou
| | - Zhixing Huang
- The Fifth Affiliated Hospital
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease
- School of Pharmaceutical Sciences
- Guangzhou Medical University
- Guangzhou
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie
- Georg-August-Universität Göttingen
- 37077 Göttingen
- Germany
- WISCh (Wöhler-Research Institute for Sustainable Chemistry)
| | - Zhixiong Ruan
- The Fifth Affiliated Hospital
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease
- School of Pharmaceutical Sciences
- Guangzhou Medical University
- Guangzhou
| |
Collapse
|
80
|
Gao F, Meng FX, Du JY, Zhang S, Huang HL. One-Step Synthesis of Trifluoroethylated Chromones via Radical Cascade Cyclization-Coupling of 2-(Allyloxy)arylaldehydes. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901636] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Fei Gao
- Institute of Molecular Medicine; Renji Hospital, School of Medicine; Shanghai Jiao Tong University; 200127 Shanghai China
| | - Fan-Xiao Meng
- College of Chemistry and Chemical Engineering; Liaocheng University; 252059 Liaocheng Shandong China
| | - Ji-Yuan Du
- College of Chemistry and Chemical Engineering; Liaocheng University; 252059 Liaocheng Shandong China
| | - Shiyan Zhang
- Institute of Molecular Medicine; Renji Hospital, School of Medicine; Shanghai Jiao Tong University; 200127 Shanghai China
| | - Hong-Li Huang
- College of Chemistry and Chemical Engineering; Liaocheng University; 252059 Liaocheng Shandong China
| |
Collapse
|
81
|
Wang P, Gao X, Huang P, Lei A. Recent Advances in Electrochemical Oxidative Cross‐Coupling of Alkenes with H
2
Evolution. ChemCatChem 2019. [DOI: 10.1002/cctc.201901773] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Pan Wang
- Institute for Advanced Studies (IAS) College of Chemistry and Molecular SciencesWuhan University Wuhan 430072 P. R. China
| | - Xinlong Gao
- Institute for Advanced Studies (IAS) College of Chemistry and Molecular SciencesWuhan University Wuhan 430072 P. R. China
| | - Pengfei Huang
- Institute for Advanced Studies (IAS) College of Chemistry and Molecular SciencesWuhan University Wuhan 430072 P. R. China
| | - Aiwen Lei
- Institute for Advanced Studies (IAS) College of Chemistry and Molecular SciencesWuhan University Wuhan 430072 P. R. China
- National Research Center for Carbohydrate SynthesisJiangxi Normal University Nanchang 330022 P. R. China
| |
Collapse
|
82
|
Zhang T, Pan J, Duan J, Wu J, Zhang W, Wu F. Radical Difunctionalization of Alkenes with Iododifluoromethyl Ketones Under Ni‐Catalysis. ChemCatChem 2019. [DOI: 10.1002/cctc.201901395] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Tianyu Zhang
- School of Chemical and Environmental EngineeringShanghai Institute of Technology Shanghai 201418 P. R. China
| | - Jun Pan
- School of Chemical and Environmental EngineeringShanghai Institute of Technology Shanghai 201418 P. R. China
| | - Jin Duan
- School of Chemical and Environmental EngineeringShanghai Institute of Technology Shanghai 201418 P. R. China
| | - Jingjing Wu
- School of Chemical and Environmental EngineeringShanghai Institute of Technology Shanghai 201418 P. R. China
| | - Wei Zhang
- Department of ChemistryUniversity of Massachusetts Boston Boston MA 02125 USA
| | - Fanhong Wu
- School of Chemical and Environmental EngineeringShanghai Institute of Technology Shanghai 201418 P. R. China
| |
Collapse
|
83
|
Jung HI, Kim Y, Kim DY. Electrochemical trifluoromethylation/semipinacol rearrangement sequences of alkenyl alcohols: synthesis of β-CF 3-substituted ketones. Org Biomol Chem 2019; 17:3319-3323. [PMID: 30869722 DOI: 10.1039/c9ob00373h] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Electrochemical oxidative radical trifluoromethylation/semipinacol rearrangement sequences of alkenyl alcohols were developed in this study. This approach is environmentally benign and uses the shelf-stable Langlois reagent as a trifluoromethyl radical precursor and electrons as the oxidizing reagents. The present protocol offers a facile route to prepare β-trifluoromethylated ketone derivatives.
Collapse
Affiliation(s)
- Hye Im Jung
- Department of Chemistry, Soonchunhyang University, Asan 31538, Chungnam, Republic of Korea.
| | | | | |
Collapse
|
84
|
Manoharan R, Logeswaran R, Jeganmohan M. Ru(II)- or Rh(III)-Catalyzed Difunctionalization of Alkenes by Tandem Cyclization of N-Aryl Acrylamides with Alkenes. J Org Chem 2019; 84:14830-14843. [DOI: 10.1021/acs.joc.9b02527] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Ramasamy Manoharan
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, Tamil Nadu, India
| | - Ravichandran Logeswaran
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, Tamil Nadu, India
| | - Masilamani Jeganmohan
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, Tamil Nadu, India
| |
Collapse
|
85
|
Deng Y, Lu F, You S, Xia T, Zheng Y, Lu C, Yang G, Chen Z, Gao M, Lei A. External‐Oxidant‐Free Electrochemical Oxidative Trifluoromethylation of Arenes Using CF
3
SO
2
Na as the CF
3
Source. CHINESE J CHEM 2019. [DOI: 10.1002/cjoc.201900168] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Yong Deng
- Ministry‐of‐Education Key Laboratory for the Synthesis and Application of Organic Functional Molecule & School of Chemistry and Chemical Engineering, Hubei University Wuhan Hubei 430072 China
| | - Fangling Lu
- Ministry‐of‐Education Key Laboratory for the Synthesis and Application of Organic Functional Molecule & School of Chemistry and Chemical Engineering, Hubei University Wuhan Hubei 430072 China
| | - Siqi You
- Ministry‐of‐Education Key Laboratory for the Synthesis and Application of Organic Functional Molecule & School of Chemistry and Chemical Engineering, Hubei University Wuhan Hubei 430072 China
| | - Tianrui Xia
- Ministry‐of‐Education Key Laboratory for the Synthesis and Application of Organic Functional Molecule & School of Chemistry and Chemical Engineering, Hubei University Wuhan Hubei 430072 China
| | - Yifan Zheng
- Ministry‐of‐Education Key Laboratory for the Synthesis and Application of Organic Functional Molecule & School of Chemistry and Chemical Engineering, Hubei University Wuhan Hubei 430072 China
| | - Cuifen Lu
- Ministry‐of‐Education Key Laboratory for the Synthesis and Application of Organic Functional Molecule & School of Chemistry and Chemical Engineering, Hubei University Wuhan Hubei 430072 China
| | - Guichun Yang
- Ministry‐of‐Education Key Laboratory for the Synthesis and Application of Organic Functional Molecule & School of Chemistry and Chemical Engineering, Hubei University Wuhan Hubei 430072 China
| | - Zuxing Chen
- Ministry‐of‐Education Key Laboratory for the Synthesis and Application of Organic Functional Molecule & School of Chemistry and Chemical Engineering, Hubei University Wuhan Hubei 430072 China
| | - Meng Gao
- Ministry‐of‐Education Key Laboratory for the Synthesis and Application of Organic Functional Molecule & School of Chemistry and Chemical Engineering, Hubei University Wuhan Hubei 430072 China
- National Research Center for Carbohydrate Synthesis, Jiangxi Normal University Nanchang Jiangxi 330022 China
| | - Aiwen Lei
- College of Chemistry and Molecular Sciences, the Institute for Advanced Studies (IAS), Wuhan University Wuhan Hubei 430072 China
| |
Collapse
|
86
|
Wan C, Song RJ, Li JH. Electrooxidative 1,2-Bromoesterification of Alkenes with Acids and N-Bromosuccinimide. Org Lett 2019; 21:2800-2803. [DOI: 10.1021/acs.orglett.9b00771] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Chao Wan
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
| | - Ren-Jie Song
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
| | - Jin-Heng Li
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China
| |
Collapse
|
87
|
Li F, Lin D, He T, Zhong W, Huang J. Electrochemical Decarboxylative Trifluoromethylation of
α, β‐
Unsaturated Carboxylic Acids with CF
3
SO
2
Na. ChemCatChem 2019. [DOI: 10.1002/cctc.201900438] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Fang‐Yuan Li
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical EngineeringSouth China University of Technology Wushan, Tianhe, Guangzhou 510640 P.R. China
| | - Dian‐Zhao Lin
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical EngineeringSouth China University of Technology Wushan, Tianhe, Guangzhou 510640 P.R. China
| | - Tian‐Jun He
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical EngineeringSouth China University of Technology Wushan, Tianhe, Guangzhou 510640 P.R. China
| | - Wei‐Qiang Zhong
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical EngineeringSouth China University of Technology Wushan, Tianhe, Guangzhou 510640 P.R. China
| | - Jing‐Mei Huang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical EngineeringSouth China University of Technology Wushan, Tianhe, Guangzhou 510640 P.R. China
| |
Collapse
|
88
|
Dou GY, Jiang YY, Xu K, Zeng CC. Electrochemical Minisci-type trifluoromethylation of electron-deficient heterocycles mediated by bromide ions. Org Chem Front 2019. [DOI: 10.1039/c9qo00552h] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
An electrochemical methodology for the Minisci-type trifluoromethylation of electron-deficient heterocycles mediated by cheap and easily available bromide ions has been developed.
Collapse
Affiliation(s)
- Gui-Yuan Dou
- Beijing Key Laboratory of Environmental and Viral Oncology
- College of Life Science & Bioengineering
- Beijing University of Technology
- Beijing 100124
- China
| | - Yang-Ye Jiang
- Beijing Key Laboratory of Environmental and Viral Oncology
- College of Life Science & Bioengineering
- Beijing University of Technology
- Beijing 100124
- China
| | - Kun Xu
- Beijing Key Laboratory of Environmental and Viral Oncology
- College of Life Science & Bioengineering
- Beijing University of Technology
- Beijing 100124
- China
| | - Cheng-Chu Zeng
- Beijing Key Laboratory of Environmental and Viral Oncology
- College of Life Science & Bioengineering
- Beijing University of Technology
- Beijing 100124
- China
| |
Collapse
|
89
|
Xu K, Chen W, Lin J, Chen G, Wang B, Tian X. Facile synthesis of 9H-pyrrolo[1,2-a]indoles via Brønsted acid catalyzed cascade reactions. Chem Commun (Camb) 2019; 55:14613-14616. [PMID: 31742577 DOI: 10.1039/c9cc07228d] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A Brønsted acid system promotes the Friedel–Crafts alkenylation/1,6-addition/condensation cascade reaction of ynones with indoles to access 9H-pyrrolo[1,2-a]indoles.
Collapse
Affiliation(s)
- Kunhua Xu
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease
- School of Pharmaceutical Sciences & the Fifth Affiliated Hospital
- Guangzhou Medical University
- Guangzhou
- P. R. China
| | - Wenming Chen
- Department of Pharmaceutical Production Center
- The First Affiliated Hospital of Hunan University of Chinese Medicine
- Changsha
- P. R. China
| | - Jin Lin
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease
- School of Pharmaceutical Sciences & the Fifth Affiliated Hospital
- Guangzhou Medical University
- Guangzhou
- P. R. China
| | - Guifang Chen
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease
- School of Pharmaceutical Sciences & the Fifth Affiliated Hospital
- Guangzhou Medical University
- Guangzhou
- P. R. China
| | - Biao Wang
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease
- School of Pharmaceutical Sciences & the Fifth Affiliated Hospital
- Guangzhou Medical University
- Guangzhou
- P. R. China
| | - Xu Tian
- Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease
- School of Pharmaceutical Sciences & the Fifth Affiliated Hospital
- Guangzhou Medical University
- Guangzhou
- P. R. China
| |
Collapse
|