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发布时间：2019-03-12

论文类型：期刊论文

发表时间：2018-10-01

发表刊物：JOURNAL OF FLUORINE CHEMISTRY

收录刊物：SCIE

卷号：214

页面范围：42-47

ISSN号：0022-1139

关键字：Trifluoromethylation; Coumarins; Photo-catalyzed; Transition-metal-free; Acetone; Langlois reagent

摘要：A simple, metal- and oxidant-free photo catalysis strategy for the direct trifluoromethylation of coumarins with inexpensive sodium triflinate (Langlois reagent, CF3SO2Na) as the CF3 source under xenon lamp irradiation is described. The reaction proceeds under ambient conditions and affords the corresponding products in moderate yields. The acetone can be used as low-cost radical initiator to generate CF3 radicals from sodium triflinate efficiently.