TCDA: Practical Synthesis and Application in the Trifluoromethylation of Arenes and Heteroarenes
作者:Jian Wang、Xiaomin Zhang、Zehong Wan、Feng Ren
DOI:10.1021/acs.oprd.6b00079
日期:2016.4.15
A practical synthesis of the reagent trimethylsilyl chlorodifluoroacetate (TCDA) is reported on 50 g scale. The trifluoromethylation with TCDA was optimized, and the reaction shows very broad scope with respect to electron-deficient, -neutral, -rich aryl/heteroaryl iodides, as well as excellent functional group tolerability, such as ester, amide, aldehyde, hydroxyl, and carboxylic acid. The reagent
据报道,该试剂的实用合成为50 g规模的三氟甲硅烷基氯二氟乙酸酯(TCDA)。优化了用TCDA进行的三氟甲基化反应,该反应对于缺电子的,中性的,富含芳基/杂芳基的碘化物以及极好的官能团耐受性(如酯,酰胺,醛,羟基和羧酸。该试剂还用于三种医学上相关化合物的后期三氟甲基化。此外,该方法以10 g的规模合成了结构单元三氟甲基吡啶和一个药物相关分子Boc-氟西汀,证明了其在过程化学中的实际应用。