Ruthenium Carbene-Mediated Construction of Strained Allenes via the Enyne Cross-Metathesis/Cyclopropanation of 1,6-Enynes
作者:Ming Gao、Qiangqiang Gao、Xiangbin Hao、Ying Wu、Qingmin Zhang、Guohua Liu、Rui Liu
DOI:10.1021/acs.orglett.9b04662
日期:2020.2.7
Herein, we report on the unprecedented dimerization of 1,6-enynes using a commercially available ruthenium complex RuCl2(PPh3)3, which results in a series of bicyclo[3.1.0]hexyl allene derivatives in moderate to excellent yields. Mechanistic investigation indicates that the in-situ-generated ruthenium vinylidene undergoes a site-selective metathesis process to provide allenyl ruthenium carbene, which
在本文中,我们报道了使用可商购的钌络合物RuCl2(PPh3)3进行的1,6-烯炔空前的二聚化,结果以中等至极好的收率得到了一系列双环[3.1.0]己基烯丙烯衍生物。机理研究表明,原位生成的亚乙烯基钌经历了位点选择性复分解过程,以提供烯丙基钌卡宾,该烯基可以通过[2 + 2]环加成/金属消除而被烯炔的悬垂C = C键分子内捕获处理。