A convenient and straightforward strategy for the synthesis of 2,3-disubstituted and 2,3,5-trisubstituted furans via a base-promoted domino reaction of β-keto compounds with vinyl dichlorides is described. This transition-metal-free approach proceeds under operationally simple reaction conditions featuring easily available starting materials, a broad substrate scope, and good functional group tolerance
Kondo; Suzuki, Yakugaku Zasshi/Journal of the Pharmaceutical Society of Japan, 1927, # 544, p. 72
作者:Kondo、Suzuki
DOI:——
日期:——
Phosphine-Mediated Reductive Condensation of γ-Acyloxy Butynoates: A Diversity Oriented Strategy for the Construction of Substituted Furans
作者:Cheol-Kyu Jung、Jian-Cheng Wang、Michael J. Krische
DOI:10.1021/ja049377l
日期:2004.4.1
gamma-acyloxy butynoates to stoichiometric quantities of triphenylphosphine results in reductive condensation to afford substituted furans, by way of allenic ester intermediates. As gamma-acyloxy butynoates are readily obtained through condensation of ethyl propiolate with aldehydes followed by acylation, this method represents a powerful and mechanistically novel protocol for the convergent three-component