Anion-accelerated asymmetric Nazarov cyclization: access to vicinal all-carbon quaternary stereocenters
作者:Cody F. Dickinson、Glenn P. A. Yap、Marcus A. Tius
DOI:10.1039/d3ob00735a
日期:——
We have developed a catalytic asymmetric Nazarov cyclization that results in the formation of two contiguous all-carbon quaternary stereocenters in high yield with excellent levels of asymmetric induction. This method requires no catalyst recognition elements in the starting materials that are simple diketoesters. Geometrically pure E or Z isomers of the starting material lead to diastereomerically
我们开发了一种催化不对称纳扎罗夫环化,可高产率形成两个连续的全碳四元立构中心,并具有出色的不对称诱导水平。该方法不需要在作为简单二酮酯的起始材料中存在催化剂识别元素。起始材料的几何纯E或Z异构体可产生具有高对映选择性的非对映异构纯产物,因为进行环化的物质是构型稳定的烯醇铑。