|
51
|
Hong J, Liu Q, Li F, Bai G, Liu G, Li M, Nayal OS, Fu X, Mo F. Electrochemical Radical Borylation of Aryl Iodides. CHINESE J CHEM 2019. [DOI: 10.1002/cjoc.201900001] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Junting Hong
- Department of Energy and Resources Engineering, College of EngineeringPeking University Beijing 100871 China
| | - Qianyi Liu
- Department of Energy and Resources Engineering, College of EngineeringPeking University Beijing 100871 China
| | - Feng Li
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical SciencesPeking University Beijing 100871 China
| | - Guangcan Bai
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical SciencesPeking University Beijing 100871 China
| | - Guoquan Liu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical SciencesPeking University Beijing 100871 China
| | - Man Li
- Department of Energy and Resources Engineering, College of EngineeringPeking University Beijing 100871 China
| | - Onkar S. Nayal
- Department of Energy and Resources Engineering, College of EngineeringPeking University Beijing 100871 China
| | - Xuefeng Fu
- Department of Biomedical Engineering, College of EngineeringPeking University Beijing 100871 China
| | - Fanyang Mo
- Department of Energy and Resources Engineering, College of EngineeringPeking University Beijing 100871 China
- Jiangsu Donghai Silicon Industry S&T Innovation CenterJiangsu Weiming Environmental Protection S&T Co., Ltd., No. 38, Guangming Rd, Donghai County Jiangsu 222300 China
| |
Collapse
|
|
52
|
Yuan Y, Yao A, Zheng Y, Gao M, Zhou Z, Qiao J, Hu J, Ye B, Zhao J, Wen H, Lei A. Electrochemical Oxidative Clean Halogenation Using HX/NaX with Hydrogen Evolution. iScience 2019; 12:293-303. [PMID: 30735897 PMCID: PMC6365813 DOI: 10.1016/j.isci.2019.01.017] [Citation(s) in RCA: 90] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 12/03/2018] [Accepted: 01/09/2019] [Indexed: 01/24/2023] Open
Abstract
Organic halides (R-X) are prevalent structural motifs in pharmaceutical molecules and key building blocks for the synthesis of fine chemicals. Although a number of routes are available in the literature for the synthesis of organic halides, these methods often require stoichiometric additives or oxidants, metal catalysts, leaving or directing groups, or toxic halogenating agents. In addition, the necessity of employing different, often tailor-made, catalytic systems for each type of substrate also limits the applicability of these methods. Herein, we report a clean halogenation by electrochemical oxidation with NaX/HX. A series of organic halides were prepared under metal catalyst- and exogenous-oxidant-free reaction conditions. It is worth noting that this reaction has a broad substrate scope; various heteroarenes, arenes, alkenes, alkynes, and even aliphatic hydrocarbons could be applied. Most importantly, the reaction could also be performed on a 200-mmol scale with the same efficiency (86%, 50.9 g pure product). Metal catalyst free and exogenous oxidant free Commercially available, nontoxic, and green halogenating agents Broad substrate scope 200-mmol-scale synthesis
Collapse
Affiliation(s)
- Yong Yuan
- National Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, Jiangxi 330022, P. R. China; College of Chemistry and Molecular Sciences, the Institute for Advanced Studies (IAS), Wuhan University, Wuhan, Hubei 430072, P. R. China
| | - Anjin Yao
- National Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, Jiangxi 330022, P. R. China
| | - Yongfu Zheng
- National Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, Jiangxi 330022, P. R. China
| | - Meng Gao
- National Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, Jiangxi 330022, P. R. China
| | - Zhilin Zhou
- National Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, Jiangxi 330022, P. R. China
| | - Jin Qiao
- National Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, Jiangxi 330022, P. R. China
| | - Jiajia Hu
- National Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, Jiangxi 330022, P. R. China
| | - Baoqin Ye
- National Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, Jiangxi 330022, P. R. China
| | - Jing Zhao
- National Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, Jiangxi 330022, P. R. China
| | - Huilai Wen
- National Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, Jiangxi 330022, P. R. China
| | - Aiwen Lei
- National Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang, Jiangxi 330022, P. R. China; College of Chemistry and Molecular Sciences, the Institute for Advanced Studies (IAS), Wuhan University, Wuhan, Hubei 430072, P. R. China.
| |
Collapse
|
|
53
|
Zhang Z, Zhang L, Cao Y, Li F, Bai G, Liu G, Yang Y, Mo F. Mn-Mediated Electrochemical Trifluoromethylation/C(sp 2)-H Functionalization Cascade for the Synthesis of Azaheterocycles. Org Lett 2019; 21:762-766. [PMID: 30672710 DOI: 10.1021/acs.orglett.8b04010] [Citation(s) in RCA: 82] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A general electrohemical strategy for the combined trifluoromethylation/C(sp2)-H functionalization using Langlois' reagent as the CF3 source under oxidant-free conditions was developed. Using Mn salts as the redox mediator, this method provides an efficient and sustainable means to access a variety of functionalized heterocycles bearing a CF3 moiety. Detailed mechanistic studies are consistent with the formation of CF3-bound high oxidation state Mn species, suggesting a transition-metal-mediated CF3 transfer mechanism for this trifluoromethylation/C(sp2)-H functionalization process.
Collapse
Affiliation(s)
| | | | | | | | | | | | - Yang Yang
- Division of Chemistry and Chemical Engineering , California Institute of Technology , Pasadena , California 91125 , United States
| | | |
Collapse
|
|
54
|
Deng L, Wang Y, Mei H, Pan Y, Han J. Electrochemical Dehydrogenative Phosphorylation of Alcohols for the Synthesis of Organophosphinates. J Org Chem 2019; 84:949-956. [DOI: 10.1021/acs.joc.8b02882] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lingling Deng
- School of Chemistry and Chemical Engineering, State Key laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, Nanjing University, Nanjing 210093, China
| | - Yang Wang
- School of Chemistry and Chemical Engineering, State Key laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, Nanjing University, Nanjing 210093, China
| | - Haibo Mei
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, Jiangsu, China
| | - Yi Pan
- School of Chemistry and Chemical Engineering, State Key laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, Nanjing University, Nanjing 210093, China
| | - Jianlin Han
- School of Chemistry and Chemical Engineering, State Key laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, Nanjing University, Nanjing 210093, China
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, Jiangsu, China
| |
Collapse
|