Visible Light Accelerated Vinyl C-H Arylation in Pd-Catalysis: Application in the Synthesis of ortho Tetra-substituted Vinylarene Atropisomers

被引:41
|
作者
Feng, Jia [1 ]
Li, Bin [1 ]
Jiang, Julong [1 ]
Zhang, Mingkai [1 ]
Ouyang, Wenbai [1 ]
Li, Chunyu [1 ]
Fu, Yao [1 ]
Gu, Zhenhua [1 ]
机构
[1] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Dept Chem, 96 Jinzhai Rd, Hefei 230026, Anhui, Peoples R China
关键词
palladium; visible light; C-H functionalization; isotope effect; atropisomer; PHOTOREDOX CATALYSIS; STEREOSELECTIVE-SYNTHESIS; DIARYLIODONIUM SALTS; SELECTIVE ACCESS; FUNCTIONALIZATION; ALKENES; ACTIVATION; OLEFINS; ARENES; BONDS;
D O I
10.1002/cjoc.201700618
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A visible light accelerated C-H functionalization reaction in palladium-catalyzed arylation of vinyl arenes with diaryliodonium salts is reported in the absence of additional photosensitizer. The kinetic isotope effect (k(H)/k(D)) was changed from 3.6 (under darkness) to 1.1 when irradiated by visible light, which indicated that the C-H functionalization step was the rate determining step under darkness and significantly accelerated by the irradiation of visible light. Finally the synthesis of ortho tetra-substituted vinylarene atropisomers with high enantiospecificity was realized via this protocol.
引用
收藏
页码:11 / 14
页数:4
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