Thieme Chemistry Journal Awardees - Where Are They Now? Bifunctional Organocatalysis with N-Formyl-l-Proline: A Novel Approach to Epoxide Ring Opening and Sulfide Oxidation
作者:Svetlana Tsogoeva、Shengwei Wei、Kerstin Stingl、Katharina Weiß
DOI:10.1055/s-0029-1219363
日期:2010.3
A conceptually distinct approach to the aminolysis of 1,2-epoxides, which involves Lewis base-Brønsted acid catalysis employing N-formyl-l-proline as an easily accessible bifunctional organocatalyst and water as a solvent is presented. The potential of N-formyl-l-proline as organocatalyst for the sulfide oxidation reaction using aqueous hydrogen peroxide as environmentally benign and readily available oxidant is also demonstrated. Good to high yields are achieved for both reactions.
提出了一种概念上截然不同的方法来实现1,2-环氧化物的氨基解反应,该方法采用易于获得的N-甲酰基-L-脯氨酸作为双功能有机催化剂,通过路易斯碱-布朗斯特酸催化,并以水为溶剂。同时,也展示了N-甲酰基-L-脯氨酸作为有机催化剂在硫化物氧化反应中的潜力,使用环保且易于获得的过氧化氢水溶液作为氧化剂。这两种反应均获得了良好至高产率的结果。