Regioselective ortho-carboxylation of phenols catalyzed by benzoic acid decarboxylases: a biocatalytic equivalent to the Kolbe–Schmitt reaction
作者:Christiane Wuensch、Johannes Gross、Georg Steinkellner、Andrzej Lyskowski、Karl Gruber、Silvia M. Glueck、Kurt Faber
DOI:10.1039/c3ra47719c
日期:——
catalyzed carboxylation of electron-rich phenol derivatives employing recombinant benzoic acid decarboxylases at the expense of bicarbonate as CO2 source is reported. In contrast to the classic Kolbe–Schmitt reaction, the biocatalytic equivalent proceeded in a highly regioselective fashion exclusively at the ortho-position of the phenolic directing group in up to 80% conversion. Several enzymes were identified
报道了使用重组苯甲酸脱羧酶以碳酸氢盐为CO 2源为代价的酶催化富电子酚衍生物的羧化反应。与经典的Kolbe-Schmitt反应相反,该生物催化等效物仅在酚类导向基团的邻位以高度区域选择性的方式进行,转化率高达80%。鉴定了几种酶,它们显示出非常宽泛的底物范围,包括烷基,烷氧基,卤素和氨基官能团。基于晶体结构和分子对接模拟,提出了2,6-二羟基苯甲酸脱羧酶的机理建议。