作者:Hisao Nishiyama、Koji Sakuta、Noriyuki Osaka、Hiriyuki Arai、Makoto Matsumoto、Kenji Itoh
DOI:10.1016/s0040-4020(01)81693-8
日期:1988.1
selective fragmentation reactions of β-trimethylsilylketoximes have been proved to proceed effectively with acid catalysts giving the corresponding nitriles. Cyclic silylketoximes gave unsaturated nitriles. The fragmentation in the Beckmann rearrangement is completely controlled and directed by a trimethylsilyl group to lead the regio- and stereo-specific formation of the double bond. The catalytic fragmentation
业已证明,使用酸催化剂可有效地进行β-三甲基甲硅烷基酮肟的选择性裂解反应,得到相应的腈。环状甲硅烷基酮肟产生不饱和腈。贝克曼重排中的断裂完全由三甲基甲硅烷基控制和引导,从而导致双键的区域特异性和立体特异性形成。通过三甲基甲硅烷基酮肟肟乙酸酯和三甲基甲硅烷基三氟甲磺酸酯的组合进行催化裂解,从而以高收率得到腈。讨论了基于立体化学结果的片段的出色的立体特异性。还介绍了一些昆虫信息素的简单立体控制合成方法。