Nucleophilic Organic Base DABCO-Mediated Chemospecific Meinwald Rearrangement of Terminal Epoxides into Methyl Ketones
作者:Siqi Li、Yi Shi、Pingfan Li、Jiaxi Xu
DOI:10.1021/acs.joc.8b03171
日期:2019.4.5
various epoxides was investigated. 2-Aryl-, alkenyl-, and alkynylepoxides generate the corresponding methyl ketones chemospecifically in good to excellent yields. The current DABCO-mediated Meinwald rearrangement of epoxides features readily accessible starting materials, a wide substrate scope, a transition-metal- and acid-free environment, and chemospecificity in the isomerization of epoxides.
研究了亲核有机碱DABCO(1,4-二氮杂双环[2.2.2]辛烷)介导的各种环氧化物的Meinwald重排。2-芳基-,烯基-和炔基环氧化物以良好或优异的收率化学特异性地产生相应的甲基酮。当前的DABCO介导的环氧化物的Meinwald重排具有易于获得的原料,广泛的底物范围,无过渡金属和酸的环境以及环氧化物异构化的化学特异性。