Enantioselective Synthesis of 2-Substituted-1,5-Benzodiazepines through Domino Reaction of o-Phenylenediamine and Chalcone Derivatives
作者:Xuan Fu、Juhua Feng、Zhenhua Dong、Lili Lin、Xiaohua Liu、Xiaoming Feng
DOI:10.1002/ejoc.201100938
日期:2011.9
Chiral 2-substituted-1,5-benzodiazepine derivatives were synthesized for the first time from an enantioselective domino reaction involving o-phenylenediamine and 2′-hydroxychalcones. The titanium complex formed from chiral ligand 1a derived from (S)-BINOL and L-prolineamide promoted the reaction and gave the products in good yields with up to 82 % ee.
手性 2-取代-1,5-苯二氮卓衍生物首次从涉及邻苯二胺和 2'-羟基查耳酮的对映选择性多米诺反应合成。由衍生自 (S)-BINOL 和 L-脯氨酸酰胺的手性配体 1a 形成的钛配合物促进了反应,并以高达 82% ee 的良好收率得到了产物。