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

DOI: 10.1039/C3RA47719C

关键词:

摘要: The enzyme catalyzed carboxylation of electron-rich phenol derivatives employing recombinant benzoic acid decarboxylases at the expense bicarbonate as CO2 source is reported. In contrast to classic Kolbe–Schmitt reaction, biocatalytic equivalent proceeded in a highly regioselective fashion exclusively ortho-position phenolic directing group up 80% conversion. Several enzymes were identified, which displayed remarkably broad substrate scope encompassing alkyl, alkoxy, halo and amino-functionalities. Based on crystal structure molecular docking simulations, mechanistic proposal for 2,6-dihydroxybenzoic decarboxylase presented.

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