Asymmetric Ru/Cinchonine Dual Catalysis for the One-Pot Synthesis of Optically Active Phthalides from Benzoic Acids and Acrylates
作者:Dattatraya H. Dethe、Nagabhushana C. Beeralingappa、Salman A. Siddiqui、Prakash N. Chavan
DOI:10.1021/acs.joc.1c02961
日期:2022.4.1
Herein, we report the asymmetric Ru/cinchonine dual catalysis that provides straightforward access to enantioselective synthesis of C-3 substituted phthalides via tandem C–H activation/Michael addition cascade. The use of readily accessible and less expensive [RuCl2(p-cym)]2 and cinchonine catalyst for the one-pot assembly of chiral phthalides greatly overcomes the present trend of using highly sophisticated
在此,我们报告了不对称的 Ru/辛可宁双催化,它提供了通过串联 C-H 活化/迈克尔加成级联直接选择性合成 C-3 取代苯酞的方法。使用易于获得且更便宜的 [RuCl 2 (p-cym)] 2和辛可宁催化剂用于手性苯酞的一锅组装大大克服了目前使用高度复杂的催化剂的趋势。所开发的方法提供了使用假对映体金鸡纳生物碱作为催化剂的产品的两种对映体,从而简化了两种光学活性形式的苯酞的合成。