Synthesis of 6-Trifluoromethylphenanthridines through Radical Trifluoromethylation of Isocyanides with Sodium Triflinate under Visible Light
作者:Jianbin Li、Clarice A. D. Caiuby、Márcio W. Paixão、Chao-Jun Li
DOI:10.1002/ejoc.201701487
日期:2018.6.7
Trifluoromethylation enabled by photochemistry enriched the toolbox of synthetic chemists, to allow the simple and efficient installation of CF3 groups in organic molecules. Herein, we report a cascade addition/annulation reaction of 2‐isocyanobiphenyls towards the synthesis of 6‐trifluoromethylphenanthridines. It is proposed that this reaction is triggered by the CF3 radical generated from photoexcited
Synthesis of Chloro(phenyl)trifluoromethyliodane and Catalyst-Free Electrophilic Trifluoromethylations
作者:Cong Xu、Xiaoning Song、Jia Guo、Sibao Chen、Jie Gao、Jing Jiang、Fengyun Gao、Yuxin Li、Mang Wang
DOI:10.1021/acs.orglett.8b01510
日期:2018.7.6
present work deals with a challenge in the synthesis of aryltrifluoromethyliodanes (ArICF3X) and develops a direct route to PhICF3Cl via a simple ligand-exchange reaction of PhI(OCOCF3)2, Me3SiCF3, and NaCl for the first time. The I–Cl bond length in PhICF3Cl supports its iodonium character, which enables an enhanced CF3-transfer capability in electrophilic S-, O-, N-, and C-trifluoromethylations as