The title compounds 3 are prepared in good yield from silyl enol ethers 1 and α-nitrosostyrene 2, generated in situ from α-chloroacetophenone oxime 4. Allyltrimethylsilane smoothly affords cycloadduct 5 which could be opened to the unsaturated ketone 6 or amino olefin 7.
标题化合物3是通过在原位生成的
硅醇醚1和α-
亚硝基苯乙烯2,以良好的产率制备而成,这些化合物是由α-
氯乙酰苯肟4生成的。烯丙基三甲基
硅烷顺利地生成环加成物5,该物可以开环生成不饱和酮6或
氨烯烃7。