Decarboxylative Cyanation of Aliphatic Carboxylic Acids via Visible-Light Flavin Photocatalysis
作者:Nieves P. Ramirez、Burkhard König、Jose C. Gonzalez-Gomez
DOI:10.1021/acs.orglett.9b00064
日期:2019.3.1
An operationally simple method is disclosed for the decarboxylative cyanation of aliphatic carboxylic acids at room temperature. Riboflavin tetraacetate, which is an inexpensive organic photocatalyst, promotes the oxidation of carboxylic acids upon visible-light activation. After decarboxylation, the generated radicals are trapped by TsCN, yielding the desired nitriles without any further additive
公开了在室温下用于脂族羧酸的脱羧氰化的操作简单的方法。核黄素四乙酸酯是一种廉价的有机光催化剂,可在可见光激活时促进羧酸的氧化。脱羧后,在氧化还原中性过程中,生成的自由基被TsCN捕获,得到所需的腈,而无需任何其他添加剂。重要的是,该协议可以适应流量条件。