Chemoselective P(NMe<sub>2</sub>)<sub>3</sub>-Mediated Reductive Epoxidation between Two Different Carbonyl Electrophiles: Synthesis of Highly Functionalized Unsymmetrical Epoxides
作者:Rong Zhou、Honghui Zhang、Jialin Liu、Rongfang Liu、Wen-Chao Gao、Yan Qiao、Ruifeng Li
DOI:10.1021/acs.joc.8b00995
日期:2018.8.3
α-diketones with aldehydes and ketones, leading to an efficient synthesis of a wide range of highly functionalized unsymmetrical epoxides in moderate to excellent yields and diastereoselectivities. The Kukhtin–Ramirez adduct, which is exclusively generated in situ from an α-dicarbonyl compound and P(NMe2)3, plays a key role in governing the chemoselectivity. It represents the first practical synthesis of unsymmetrical