Metal-Free Decarboxylative Trichlorination of Alkynyl Carboxylic Acids: Synthesis of Trichloromethyl Ketones
作者:Aravindan Jayaraman、Eunjeong Cho、Francis Mariaraj Irudayanathan、Jimin Kim、Sunwoo Lee
DOI:10.1002/adsc.201701116
日期:2018.1.4
arylpropiolic acids and trichloroisocyanuric acid (TCCA). The reaction was performed in the presence of water at room temperature, and the desired products were obtained in good yields. The reaction showed good functional group tolerance towards halide, cyano, nitro, ketone, ester and aldehyde groups. In addition, the 2,2,2‐trichloroacetophenone derivatives were readily transformed into esters, amides,
2,2,2-三氯苯乙酮衍生物是通过芳基丙酸和三氯异氰尿酸(TCCA)的脱羧三氯化反应合成的。该反应在室温下在水的存在下进行,并且以良好的产率获得了所需的产物。反应显示出对卤化物,氰基,硝基,酮,酯和醛基的良好的官能团耐受性。此外,2,2,2-三氯苯乙酮衍生物很容易转化为酯,酰胺和酰肼。基于H 2 18 O(水18 O)的实验,我们提出了阳离子反应途径作为机理,并提出了两种不同的途径来生产芳基和烷基取代的丙酸。