Dearomatization Approach to 2-Trifluoromethylated Benzofuran and Dihydrobenzofuran Products
作者:David T. Smith、Edon Vitaku、Jon T. Njardarson
DOI:10.1021/acs.orglett.7b01479
日期:2017.7.7
phenoxonium intermediate, a critical choice of solvent, and reagent addition order. The fluorinated dihydrobenzofuran product can be transformed into dihydrobenzofuran and benzofuran products decorated with a 2-trifluoromethyl group. The 3-trifluoromethylacyl substituted benzofurans rapidly form hydrates, which can be reduced to the corresponding alcohols.
已经开发出一种温和的脱芳香化作用,可以用六氟乙酰丙酮(hfacac)取代基对芳香族C–H键进行邻位选择性取代。该反应取决于高碘生成的苯氧on中间体,关键溶剂的选择以及试剂的添加顺序。可以将氟化的二氢苯并呋喃产物转化为装饰有2-三氟甲基的二氢苯并呋喃和苯并呋喃产物。3-三氟甲基酰基取代的苯并呋喃迅速形成水合物,可以将其还原为相应的醇。