作者:Christopher B. Kelly、Michael A. Mercadante、Trevor A. Hamlin、Madison H. Fletcher、Nicholas E. Leadbeater
DOI:10.1021/jo301477s
日期:2012.9.21
method for the oxidation of α-trifluoromethyl alcohols to trifluoromethyl ketones (TFMKs) using the oxoammonium salt 4-acetylamino-2,2,6,6-tetramethylpiperidine-1-oxoammonium tetrafluoroborate (1) is described. Under basic conditions, oxidation proceeds rapidly and affords good to excellent yields of TFMKs, without concomitant formation of the hydrate. The byproduct of the oxidation, 4-acetylamino-2
描述了使用氧铵盐4-乙酰氨基-2,2,6,6-四甲基哌啶-1-氧铵四氟硼酸(1)将α-三氟甲基醇氧化为三氟甲基酮(TFMK)的简单,温和的方法。在碱性条件下,氧化迅速进行,并提供良好的TFMKs收率,而不会同时形成水合物。氧化的副产物4-乙酰氨基-2,2,6,6-四甲基-1-哌啶基氧基(1c)易于回收,可以方便地再氧化以再生氧代铵盐。