Silicon Polonovski Reaction. Formation and Synthetic Application of α-Siloxy Amines
作者:Norihiro Tokitoh、Renji Okazaki
DOI:10.1246/bcsj.60.3291
日期:1987.9
amines with acyl halides and haloformates gave the corresponding amides and carbamates in moderate to good yields, respectively. Treatment of α-siloxy amines with acetic acid resulted in a direct dealkylation to free secondary amines. Fluoride induced alkylation of α-siloxy amines using alkyl halides as electrophiles leading to tertiary amines was also examined and demonstrated to be a new transalkylation
通过用三烷基甲硅烷基三氟甲磺酸酯处理叔胺 N-氧化物获得的甲硅烷氧基铵盐的碱促进重排,原位制备了一种新的多功能合成中间体 α-甲硅烷氧基胺。发现碱和甲硅烷基化试剂的最佳组合是甲基锂和叔丁基二甲基甲硅烷基三氟甲磺酸酯。α-甲硅烷氧基胺与酰卤和卤代甲酸酯的反应分别以中等至良好的产率得到相应的酰胺和氨基甲酸酯。用乙酸处理 α-甲硅烷氧基胺导致直接脱烷基化为游离仲胺。还研究了氟化物诱导的α-甲硅烷氧基胺的烷基化,使用烷基卤作为亲电试剂产生叔胺,并证明是一种新的胺烷基转移方法。