Brønsted acid catalyzed regioselective aza-Ferrier reaction: a novel synthetic method for α-(N-Boc-2-pyrrolidinyl) aldehydes
作者:Eiji Tayama、Seijun Otoyama、Wataru Isaka
DOI:10.1039/b806492j
日期:——
The 1,4-elimination reaction of (Z)-N-Boc-2-(4-methoxy-2-alkenyloxy)pyrrolidines (1) is shown to proceed with high (1E,3E)-stereoselectivity to afford N-Boc-2-(1,3-dienyloxy)pyrrolidines (2); the Brønsted acid catalyzed aza-Ferrier reaction of the N-Boc-2-(1,3-dienyloxy)pyrrolidines (2) provides α-(N-Boc-2-pyrrolidinyl) aldehydes (3) in excellent yields with high α-regioselectivities.