Highly Enantioselective Synthesis of 2,3-Dihydro-1<i>H</i>-imidazo[2,1-<i>a</i>]isoindol-5(9b<i>H</i>)-ones via Catalytic Asymmetric Intramolecular Cascade Imidization–Nucleophilic Addition–Lactamization
作者:Yuwei He、Chuyu Cheng、Bin Chen、Kun Duan、Yue Zhuang、Bo Yuan、Meisan Zhang、Yougui Zhou、Zihong Zhou、Yu-Jun Su、Rihui Cao、Liqin Qiu
DOI:10.1021/ol5031603
日期:2014.12.19
2-diamine with methyl 2-formylbenzoate catalyzed by a chiral phosphoric acid represents the first efficient method for the preparation of medicinally interesting chiral 2,3-dihydro-1H-imidazo[2,1-a]isoindol-5(9bH)-ones with high yields and excellent enantioselectivities. This strategy has been shown to be quite general toward various methyl 2-formylbenzoates.
手性磷酸催化N 1-烷基乙烷-1,2-二胺与2-甲酰基苯甲酸甲酯的高对映选择性催化不对称分子内级联酰亚胺化-亲核加成-内酰胺化是制备具有医学意义的手性2,3-手性化合物的第一种有效方法二氢-1 H-咪唑并[2,1- a ] isoindol-5(9b H)-具有高收率和优异的对映选择性。已经显示出该策略对于各种2-甲酰基苯甲酸甲酯是相当普遍的。