Rhodium/zinc co-catalyzed asymmetric ring opening reactions of oxabenzonorbornadienes with carboxylic acids
作者:Xiaobo He、Jingchao Chen、Xin Xu、Fan Yang、Cuiping Gu、Yongyun Zhou、Baomin Fan
DOI:10.1016/j.tetasy.2016.11.004
日期:2017.1
The asymmetric ring opening reactions of oxabenzonorbornadienes with carboxylic acids are described. By using the complex of [Rh(COD)Cl](2) and (S,S)-BDPP, with ZnI2 as the co-catalyst, a range of aromatic acids and alkyl acids were utilized as nucleophiles to afford the corresponding chiral hydronaphthalene products with high enantioselectivities (84-94% ee). Thus, the present methodology has provides an effective synthetic method for the preparation of enantioenriched hydronaphthalenes. (C) 2016 Elsevier Ltd. All rights reserved.