A Novel Abnormal Michael Reaction of 2-Acylmethyl-4,4-dimethyl-2-oxazolines with Acetylenic Ketones and Esters
作者:Yasuo Tohda、Takeshi Yanagidani、Noriko Asaka
DOI:10.1246/bcsj.20150397
日期:2016.7.15
abnormal Michael reaction of an active methylene compound, 2-acylmethyl-4,4-dimethyl-2-oxazoline with acetylenic ketone in acetonitrile is reported. The reaction accompanies 1,3-migration of the acyl group of the substrate to give 2-(3-acyl-1-buten-4-on-1-yl)-2-oxazoline, which was easily cyclized to 5-acyl-2-pyridone derivatives by treatment with silica gel. Selectivity of the reaction depends on bulkiness