Enantioselective Synthesis of 1,2-Diamines Containing Tertiary and Quaternary Centers through Rhodium-Catalyzed DYKAT of Racemic Allylic Trichloroacetimidates
作者:Edward T. Mwenda、Hien M. Nguyen
DOI:10.1021/acs.orglett.7b02256
日期:2017.9.15
trichloroacetimidates possessing β-nitrogen substituents and proximal nitrogen-containing heterocycles, via chiral diene-ligated rhodium-catalyzed dynamic kinetic asymmetric transformations (DYKAT), provides branched allylic 1,2-diamines with high enantioselectivity. The catalytic system can be applied to the synthesis of 1,2-diamines possessing two contiguous stereocenters with excellent diastereoselectivity
通过手性二烯连接的铑催化的动态动力学不对称转化(DYKAT),具有β-氮取代基和近端含氮杂环的外消旋仲和叔烯丙基三氯乙二酰亚胺的胺化反应提供了高对映选择性的支链烯丙基1,2-二胺。该催化体系可用于合成具有两个非对映选择性的,具有两个连续立体中心的1,2-二胺。此外,含氮杂环抑制竞争性乙烯基叠氮基的形成,从而允许具有叔和季中心的1,2-二胺的高对映选择性合成。