Copper catalyzed borocarbonylation of benzylidenecyclopropanes through selective proximal C–C bond cleavage: synthesis of γ-boryl-γ,δ-unsaturated carbonyl compounds
作者:Li-Miao Yang、Hui-Hui Zeng、Xin-Lian Liu、Ai-Jun Ma、Jin-Bao Peng
DOI:10.1039/d2sc01992b
日期:——
cleavage for the synthesis of γ-boryl-γ,δ-unsaturated carbonyl compounds has been developed. Using substituted benzylidenecyclopropanes (BCPs) and chloroformates as starting material, a broad range of γ-boryl-γ,δ-unsaturated esters were prepared in moderate to excellent yields with excellent regio- and stereoselectivity. Besides, when aliphatic acid chlorides were used in this reaction, γ-boryl-γ,δ-unsaturated
开发了铜催化 BCP通过近端 C-C 键断裂的硼羰基化,用于合成 γ-硼基-γ,δ-不饱和羰基化合物。使用取代的亚苄基环丙烷 (BCP) 和氯甲酸酯作为起始原料,以中等至优异的产率制备了多种 γ-硼基-γ,δ-不饱和酯,并具有优异的区域选择性和立体选择性。此外,当在该反应中使用脂肪酰氯时,可以以优异的收率生产γ-硼基-γ,δ-不饱和酮。当取代的 BCP 用作底物时,硼羰基化主要以区域和立体选择性方式发生在苯基的近端 C-C 键反式上,从而产生Z异构体作为产物。这种有效的方法涉及C-C键的裂解和C-C键以及C-B键的形成,并为BCP的近端C-C键双功能化提供了一种新方法。