A methodology for the formal addition of β-acylalkenyl anions was developed under Brønsted base catalysis. The two-step reaction, which involves the catalytic addition of α-oxygenated propargyl anions generated via [1,2]-phospha-Brook rearrangement to electron-deficient ketones and subsequent alcoholysis, afforded tertiary alcohols having an enone moiety.
Synthesis of Polysubstituted Furans via Copper-Mediated Annulation of Alkyl Ketones with α,β-Unsaturated Carboxylic Acids
作者:Yuzhu Yang、Jinzhong Yao、Yuhong Zhang
DOI:10.1021/ol400912v
日期:2013.7.5
A novel copper-mediated annulation of alkyl ketones with alpha,beta-unsaturated carboxylic acids has been accomplished. This reaction provides a facile and regio-defined method for the synthesis of 2,3,5-trisubstituted furans from simple chemical reagents.