A Direct Route to <i>C</i>-Vinylaziridines: Reaction of <i>N</i>-Sufonylimines with Allylic Ylides under Phase-Transfer Conditions or with Preformed Ylides at Low Temperature
作者:An-Hu Li、Li-Xin Dai、Xue-Long Hou、Min-Bo Chen
DOI:10.1021/jo952245d
日期:1996.1.1
reaction has also been carried out with preformed ylides, generated from sulfoniumsalts 3, 7, arsonium salt 14, and telluronium salts 15, 16 with a base in THF at -78 degrees C. In most examples, quantitative yields were achieved. However, the trans/cis selectivity of the reaction was not high in either case. A semistable allylic sulfonium ylide, i.e., dimethylsulfonium 3-(trimethylsilyl)allylide, was found
Action d'organomagnesiens sur des sulfures et des sels de sulfonium allyliques catalysee par des sels cuivreux
作者:Y. Gendreau、J.F. Normant、J. Villieras
DOI:10.1016/s0022-328x(00)91810-2
日期:1977.12
Grignard reagents react with allylsulphides, in the presence of catalytic amounts of copper(I) salts, giving alkenes. The corresponding sulphonium salts react more rapidly. Allyic rearrangement cannot be completely avoided.