作者:Jia Wei、Pengcheng Wang、Qianfa Jia、Jiaoyao Huang、Zhiyun Du、Kun Zhang、Jian Wang
DOI:10.1002/ejoc.201300538
日期:2013.7
We disclose an efficient route to synthesize 3,4-diunsubstituted coumarins through a cascade organocatalytic reaction. The reaction is catalyzed by using of a combination of benzylamine (10 mol-%) and triethylamine (10 mol-%). Various salicylaldehydes were tested, and the corresponding coumarin products were obtained in good to high yields under mild and metal-free reaction conditions.
我们公开了一种通过级联有机催化反应合成 3,4-二未取代香豆素的有效途径。该反应通过使用苄胺(10 mol-%)和三乙胺(10 mol-%)的组合来催化。测试了各种水杨醛,并在温和且无金属的反应条件下以良好至高产率获得了相应的香豆素产物。