[2 + 1] Cycloaddition of (E)-1-(phenylseleno)-2-(trimethylsilyl)ethene. Novel cyclopropane ring formation by a 1,2-shift of a trimethylsilyl group
作者:Shoko Yamazaki、Shigeki Katoh、Shinichi Yamabe
DOI:10.1021/jo00027a003
日期:1992.1
Reaction of (E)-1-(phenylseleno)-2-(trimethylsilyl)ethene (1) with vinyl ketones 2a-d in the presence of SnCl4 gave cyclopropane products by a formal [2 + 1] cycloaddition accompanied by 1,2-silicon migration rather than [2 + 2] cycloaddition.