Facile synthesis of α,α-difluoroalkyl aryl thioethers and their oxidative desulfurization–fluorination to trifluorides
作者:Verena Hugenberg、Günter Haufe
DOI:10.1016/j.jfluchem.2010.06.010
日期:2010.9
treatment of the formed fluorinated thioethers with the same reagents at elevated temperature gave alkyl trifluoroacetates in almost quantitative yield under optimised conditions by oxidative desulfurization–fluorination.
使用N-卤代酰亚胺作为亲电试剂和过量的Py·9HF作为试剂,通过两个连续的氟-Pummerer重排反应,由2-(芳硫基)乙酸烷基酯以52-77%的产率合成2-芳基硫代2,2-二氟烷基烷基。室温下的氟化物源。在高温下用相同的试剂对形成的氟化硫醚进行后续处理,可以在最佳条件下通过氧化脱硫-氟化反应以几乎定量的收率得到三氟乙酸烷基酯。