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Liu, Wei-Min,Liu, Zhen-Hong,Cheong, Wei-Wen,Priscilla, Lu-Yi Teo,Li, Yongxin,Narasaka, Koichi Korean Chemical Society 2010 Bulletin of the Korean Chemical Society Vol.31 No.3
A new synthetic method of 2,5-disubstituted pyrrolidines is developed by the cyclization of unsaturated N-benzoyloxysulfonamides by $(CuOTf)_2{\cdot}C_6H_6$ in refluxing dichloroethane. Various N-4- and N-5-alkenyl and alkynyl N-benzoyloxysulfonamides are cyclized to give pyrrolidines. The cyclization proceeds via addition of sulfonamidoyl radicals to intramolecular unsaturated bonds or allylic hydrogen abstraction with the radical intermediates.
Wei-Min Liu,Zhen-Hong Liu,Wei-Wen Cheong,Lu-Yi Teo Priscilla,Yongxin Li,Koichi Narasaka 대한화학회 2010 Bulletin of the Korean Chemical Society Vol.31 No.3
A new synthetic method of 2,5-disubstituted pyrrolidines is developed by the cyclization of unsaturated N-benzoyloxysulfonamides by (CuOTf)2·C6H6 in refluxing dichloroethane. Various N-4- and N-5-alkenyl and alkynyl N-benzoyloxysulfonamides are cyclized to give pyrrolidines. The cyclization proceeds via addition of sulfonamidoyl radicals to intramolecular unsaturated bonds or allylic hydrogen abstraction with the radical intermediates.