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首页> 外文期刊>Advanced synthesis & catalysis >Direct Decarboxylative Alkynylation of alpha,alpha-Difluoroarylacetic Acids under Transition Metal-Free Conditions
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Direct Decarboxylative Alkynylation of alpha,alpha-Difluoroarylacetic Acids under Transition Metal-Free Conditions

机译:无过渡金属条件下α,α-二氟芳基丙烯酸的直接脱羧炔基化

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摘要

An efficient and generally applicable protocol for decarboxylative coupling of alpha,alpha-difluoroarylacetic acids with ethynylbenziodoxolone (EBX) reagents has been developed, affording alpha,alpha-difluoromethylated alkynes bearing various functional groups in moderate to excellent yields. Remarkably, this potassium persulfate (K2S2O8)-promoted reaction employs water as solvent under transition metal-free conditions, thus providing a green synthetic approach to alpha,alpha-difluoromethylated alkynes.
机译:已开发出一种有效且普遍适用的方案,用于将α,α-二氟代芳酸与乙炔基苯并恶唑啉酮(EBX)试剂进行脱羧偶联,以中等至极好的收率提供带有各种官能团的α,α-二氟甲基化炔烃。值得注意的是,这种过硫酸钾(K2S2O8)促进的反应在无过渡金属的条件下使用水作为溶剂,从而为α,α-二氟甲基化炔烃提供了绿色合成方法。

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