Iridium-Catalyzed Asymmetric Hydrogenation of γ- and δ-Ketoacids for Enantioselective Synthesis of γ- and δ-Lactones
作者:Yun-Yu Hua、Huai-Yu Bin、Tao Wei、Hou-An Cheng、Zu-Peng Lin、Xing-Feng Fu、Yuan-Qiang Li、Jian-Hua Xie、Pu-Cha Yan、Qi-Lin Zhou
DOI:10.1021/acs.orglett.9b04253
日期:2020.2.7
A highly efficient asymmetric hydrogenation of γ- and δ-ketoacids was developed by using a chiral spiro iridium catalyst (S)-1a, affording the optically active γ- and δ-hydroxy acids/lactones in high yields with excellent enantioselectivities (up to >99% ee) and turnover numbers (TON up to 100000). This protocol provides an efficient and practical method for enantioselective synthesis of Ezetimibe
通过使用手性螺铱催化剂(S)-1a开发了高效的不对称氢化γ-和δ-酮酸,以高收率提供了光学活性的γ-和δ-羟基酸/内酯,对映选择性极好(高达> 99%ee)和营业额数字(TON最高为100000)。该协议为依泽替米贝的对映选择性合成提供了一种有效而实用的方法。