Enantioselective One-Pot Synthesis of α,β-Epoxy Ketones via Aerobic Oxidation of Cyclopropanols
作者:Gábor Zoltán Elek、Victor Borovkov、Margus Lopp、Dzmitry G. Kananovich
DOI:10.1021/acs.orglett.7b01519
日期:2017.7.7
available tertiary cyclopropanols. The one-pot protocol includes the aerobic oxidation of cyclopropanol derivatives catalyzed by Mn(III) complexes followed by the poly-l-leucine-assisted stereoselective elimination of water from the intermediate peroxides with DBU to afford the corresponding epoxy ketones in high yields and good-to-excellent enantioselectivities (up to 97%).
已开发出一种有效,温和且对环境有益的方法,用于从容易获得的叔环丙醇不对称合成2-氧戊基酮。一锅法包括用Mn(III)配合物催化环丙醇衍生物的好氧氧化,然后用DBU用聚-1-亮氨酸辅助立体选择性地从中间过氧化物中除去水,从而以高收率和良好的产率提供相应的环氧酮到出色的对映选择性(高达97%)。