Azomethine ylides were generated from N-(α-silylbenzyl)amides by thermal silicon shift to the oxygen and trapped with dipolarophiles to give the same products as those from the corresponding nitrileylides via elimination of silanol.
Nucleophilic Aminomethylation of Aldehydes with α-Amino Alkylsilanes
作者:Otohiko Tsuge、Junji Tanaka、Shuji Kanemasa
DOI:10.1246/bcsj.58.1991
日期:1985.7
Fluoride-induced desilylation of (α-phthalimido-, α-morpholino-, and α-acetamidobenzyl)silanes and a (phthalimidomethyl)silane generates the corresponding α-amino carbanions which add to a variety of aldehydes. The conversion of phthalimido group of the adducts into amino moiety leads to β-amino alcohols. This simple reaction sequence offers a new and general method of nucleophilic aminomethylation.