作者:Vitalij V. Levin、Alexander D. Dilman、Pavel A. Belyakov、Marina I. Struchkova、Vladimir A. Tartakovsky
DOI:10.1002/ejoc.200800820
日期:2008.11
A general method for the trifluoromethylation of imines by using Me3SiCF3 under acidic conditions is described. The reaction is promoted by hydrofluoric acid generated in situ from KHF2 and either TFA or TfOH. A new chemoselectivity pattern was achieved, as the C=N bond was found to be more reactivate than the carbonyl group. The trifluoromethylation reaction is believed to proceed by concerted transfer
描述了在酸性条件下使用 Me3SiCF3 对亚胺进行三氟甲基化的一般方法。该反应由由 KHF2 和 TFA 或 TfOH 原位生成的氢氟酸促进。实现了新的化学选择性模式,因为发现 C=N 键比羰基更容易重新活化。据信,三氟甲基化反应是通过 CF3 基团从硅原子到亚胺鎓亲电试剂的协同转移而进行的。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)