Silver(I)-Mediated Dual Cleavage of C-C and C-O Bonds in the Reaction of Diarylmethylenecyclopropanes with Tetrahydrofuran: Synthesis of 4-(3-Halobut-3-enyloxy)butyl 2,2,2-Trifluoroacetate Derivatives
作者:Gen-Qiang Chen、Xiang-Ying Tang、Min Shi
DOI:10.1002/ejoc.201301262
日期:2014.1
The reaction of methylenecyclopropanes (MCPs) with tetrahydrofuran (THF) proceed smoothly in the presence of AgOC(O)CF3 and electrophilic halogenation reagents to give the corresponding 4-(3-halobut-3-enyloxy)butyl2,2,2-trifluoroacetatederivatives in moderate yields through dualcleavage of C–C and C–Obonds under mild conditions.
Selective Access to Silacyclopentanes and Homoallylsilanes by La-Catalyzed Hydrosilylations of 1-Aryl Methylenecyclopropanes
作者:Xiaoming Xu、Ailin Gao、Xiufang Xu、Jianfeng Li、Chunming Cui
DOI:10.1021/jacs.3c12355
日期:2024.2.14
their unique reactivity. However, metal-catalyzed hydrosilylation of MCPs has met with very limited successes. In this paper, catalytic selective hydrosilylations of MCPs with some primary silanes using an ene-diamido lanthanum ate complex as the catalyst were described. The catalytic reactions resulted in the selective formation of silacyclopentanes and (E)-homoallylsilanes, respectively, depending on