Zinc-Catalyzed Multicomponent Reactions: Easy Access to Furyl-Substituted Cyclopropane and 1,2-Dioxolane Derivatives
作者:Sergio Mata、Jesús González、Rubén Vicente、Luis A. López
DOI:10.1002/ejoc.201600393
日期:2016.5
cyclopropyl-substituted furan derivatives by a zinc-catalyzed three-component coupling of 1,3-dicarbonylic compounds, 2-alkynals and alkenes is reported. A sequence consisting of an initial Knoevenagel condensation, cyclization, and a final cyclopropanation reaction would account for the formation of the final products. In most cases, this multicomponent process proceeds in good yield under mild reaction conditions and
据报道,通过锌催化的 1,3-二羰基化合物、2-炔醇和烯烃的三组分偶联,可以方便地合成环丙基取代的呋喃衍生物。由初始 Knoevenagel 缩合、环化和最终环丙烷化反应组成的序列将解释最终产物的形成。在大多数情况下,这种多组分过程在温和的反应条件和低催化剂负载的情况下以良好的产率进行。还报道了通过锌促进的一些环丙烷衍生物的有氧氧化有效形成 1,2-二氧戊环衍生物。1,2-二氧戊环衍生物也可通过四组分反应获得。