Exclusive γ-regio functionalization of crotonaldehyde using γ-trimethylsilyl crotonaldimine. Application to the one pot synthesis of conjugated dienals
作者:Moncef Bellassoued、Malika Salemkour
DOI:10.1016/0040-4020(96)00165-2
日期:1996.3
Cesium fluoride mediated reaction of γ-trimethylsilyl N-tert-butyl crotonaldimine 9 with a wide range of aldehydes takes place in DMSO at room temperature and affords exclusive γ-regio functionalized products. Heating (rt to 100°C) the δ-silyloxy imines 11 thus obtained leads, after very mild hydrolysis of the tert-butylimine function, to the conjugated dienals 14 in good yields and with excellent
氟化铯介导的γ-三甲基甲硅烷基N-叔丁基巴豆醛二胺9与多种醛的反应在室温下于DMSO中进行,并提供独家的γ-区域官能化产物。如此获得的δ-甲硅烷氧基亚胺11加热(室温至100℃),在叔丁基亚胺官能团非常温和的水解之后,以良好的产率和优异的(E,E)选择性而产生了共轭二烯14。