Highly Diastereoselective Epoxidation of Allyl-Substituted Cycloalkenes Catalyzed by Metalloporphyrins
作者:Wing-Kei Chan、Peng Liu、Wing-Yiu Yu、Man-Kin Wong、Chi-Ming Che
DOI:10.1021/ol0496475
日期:2004.5.1
Highly diastereoselective epoxidations of allyl-substituted cycloalkenes including allylic alcohols, esters, and amines using sterically bulky metalloporphyrins [Mn(TDCPP)Cl] (1) and [Ru(TDCPP)CO] (2) as catalysts have been achieved. The "1 + H(2)O(2)" and "2 + 2,6-Cl(2)pyNO" protocols afforded trans-epoxides selectively in good yields (up to 99%) with up to >99:1 trans-selectivity.
使用空间庞大的金属卟啉[Mn(TDCPP)Cl](1)和[Ru(TDCPP)CO](2)作为催化剂,实现了烯丙基取代的环烯烃(包括烯丙醇,酯和胺)的高度非对映选择性环氧化。“ 1 + H(2)O(2)”和“ 2 + 2,6-Cl(2)pyNO”协议以良好的收率(高达99%)选择性地提供反式环氧化物,反式> 99:1 -选择性。