Enantioselective γ-Addition-Driven Cascade of β,γ-Unsaturated Ketones by Ion-Pair Catalysis: Access to Chiral 1,3-Dioxolochroman Scaffolds
作者:Xuemei Wang、Liang Zhou、Hongkui Zhang、Xiaoyu Ren、Guowei Gao、Tianli Wang
DOI:10.1021/acs.orglett.1c03567
日期:2022.1.14
A highly enantioselective γ-addition-driven cascade of β,γ-unsaturated carbonyl compounds by bifunctional ion-pair catalysis has been developed. With this protocol, a range of functionalized chiral 1,3-dioxolochroman derivatives were prepared in high yields with superior stereoselectivities (>99% ee and >20:1 dr). The utility of this method was demonstrated by one-pot synthesis, scaled-up preparation
已经通过双功能离子对催化开发了一种高度对映选择性的 γ-加成驱动的 β,γ-不饱和羰基化合物级联反应。使用该协议,一系列功能化的手性 1,3-二氧杂色满衍生物以高产率制备,具有出色的立体选择性(>99% ee和 >20:1 dr)。该方法的实用性通过一锅合成、放大制备和简便转化得到证明。此外,机理研究提供了对反应途径和手性诱导起源的见解。