Lewis Acid-Promoted Conjugate Addition of Dienol Silyl Ethers to Nitroalkenes: Synthesis of 3-Substituted Azepanes
作者:Scott E. Denmark、Min Xie
DOI:10.1021/jo071126i
日期:2007.8.31
A novel γ-selective conjugate addition of 1-silyl-substituted dienol ethers to nitroalkenes activated by Lewis acids has been developed. The resulting α,β-unsaturated acylsilanes undergo photoinduced protodesilylation to afford the corresponding enals, which can be conveniently transformed into azepanes under appropriate reductive conditions.
已经开发了一种新的1-甲硅烷基取代的二烯醇醚向由路易斯酸活化的硝基烯烃的γ-选择性共轭加成。所得的α,β-不饱和酰基硅烷经过光诱导的原甲硅烷基化反应得到相应的烯醛,可以在适当的还原条件下方便地将其转化为a庚烷。