Brønsted acids of anionic chiral Co(<scp>iii</scp>) complexes as catalysts for the stereoselective synthesis of cis-4-aminofuranobenzopyrans
作者:Hua-Jie Jiang、Kun Liu、Jing Wang、Na Li、Jie Yu
DOI:10.1039/c7ob02452e
日期:——
A highly enantioselective interrupted Povarov reaction of salicylaldimines and 2,3-dihydrofuran was developed, through the elegant Brønsted acid catalysis of anionic chiral Co(III) complexes. This reaction affords the cis-4-aminofuranobenzopyran derivatives with up to 95% yield, >20:1 dr and 96:4 er. Moreover, a one-pot three-component procedure of salicylaldehydes, anilines, and 2,3-dihydrofuran proves
通过优雅的布朗斯台德酸催化阴离子手性Co(III)配合物,开发了水杨醛亚胺和2,3-二氢呋喃的高度对映选择性中断Povarov反应。该反应以高达95%的产率,> 20:1 dr和96:4 er提供了顺式-4-氨基呋喃并苯并吡喃衍生物。而且,水杨醛,苯胺和2,3-二氢呋喃的一锅三组分法被证明是成功的,具有更高的反应效率。