Enantioselective Construction of 2-Aryl-2,3-dihydrobenzofuran Scaffolds Using Cu/SPDO-Catalyzed [3 + 2] Cycloaddition
作者:Ze-Ran Jing、Dong-Dong Liang、Jin-Miao Tian、Fu-Min Zhang、Yong-Qiang Tu
DOI:10.1021/acs.orglett.0c04241
日期:2021.2.19
A new, efficient approach toward the preparation of 2-aryl-2,3-dihydrobenzofuran scaffolds through the Cu/SPDO-catalyzed [3 + 2] cycloaddition between quinone ester and styrene derivatives has been developed. The procedure features excellent enantioselectivities (up to 99% ee), high yields (up to 96%), and broad substrate tolerance. Additionally, asymmetric synthesis of natural corsifurans A and B
通过Cu / SPDO催化醌酯和苯乙烯衍生物之间的[3 + 2]环加成反应,开发了一种新的有效方法来制备2-芳基-2,3-二氢苯并呋喃支架。该方法具有出色的对映选择性(高达99%ee),高产率(高达96%)和广泛的底物耐受性。此外,使用该反应作为关键转化,还可以通过两步或三步实现从市售原料中天然合成呋喃呋喃A和B的不对称合成。