Cs<sub>2</sub>CO<sub>3</sub>-promoted defluorination and functionalization of α-CF<sub>3</sub>carbonyl compounds in the presence of<i>N</i>-,<i>O</i>-, and/or<i>S</i>-nucleophiles
作者:Yue Wu、Bingbing Zhang、Yinying Zheng、Yuheng Wang、Xinsheng Lei
DOI:10.1039/c8ra02353k
日期:——
efficient, and mild method for defluorination and functionalization of 3,3,3-trifluoro carbonyl compounds has been developed. In the present method, Cs2CO3 can easily convert α-trifluoromethyl esters, amides, and ketones into β,β-S-, O- and/or N-substituted α,β-unsaturated carbonyl compounds in the presence of N-, O-, and S-nucleophiles with moderate to excellent yields, and furthermore, this transformation
开发了一种简单、高效、温和的 3,3,3-三氟羰基化合物脱氟和功能化方法。在本方法中,Cs 2 CO 3在N -存在下可以很容易地将 α-三氟甲酯、酰胺和酮转化为 β,β- S-、O-和/或N-取代的 α,β-不饱和羰基化合物。, O - 和S -亲核试剂具有中等至优异的产率,此外,这种与 α-三氟甲酯和一系列 2-氨基苯酚的转化可以以良好的产率产生苯并恶唑。