作者:Martín J. Riveira、Maribel O. Marcarino、Agustina La-Venia
DOI:10.1021/acs.orglett.8b01567
日期:2018.7.6
A stereoselective multicomponent reaction involving Meldrum’s acid, a conjugated dienal, and an alcohol is reported. Valuable cyclopenta[b]furan-2-ones are obtained as products of this straightforward transformation, which is accompanied by the formation of four stereocenters, two new cycles, and four new bonds (two C–C and two C–heteroatom). A reaction mechanism was elaborated involving an initial
报道了涉及Meldrum酸,共轭二烯醛和醇的立体选择性多组分反应。作为这种直接转化的产物,获得了有价值的环戊[ b ]呋喃-2-酮,同时伴随着四个立体中心,两个新环和四个新键(两个C–C和两个C–杂原子)的形成。阐述了一种反应机理,包括最初的Knoevenagel缩合,然后进行环异构化和最终断裂。