Regiospecific Synthesis of Tetra-Substituted Furans
作者:Leiv K. Sydnes、Rustem Isanov、Myagmarsuren Sengee、Francesco Livi
DOI:10.1080/00397911.2012.748076
日期:2013.11.2
Abstract α,β-Unsaturated acetylenic γ-hydroxyketones have been shown to react with ethyl acetoacetate in a Michael-addition fashion and subsequently undergo cyclization followed by dehydration to give substituted furans with a predictable regiospecificity. The yields were good to excellent. A mechanism for the transformation is proposed, and this mechanism explains why furan formation does not take