The Friedel-Crafts acylation is commonly used for the synthesis of aryl ketones, and a biocatalytic version, which may benefit from the chemo- and regioselectivity of enzymes, has not yet been introduced. Described here is a bacterial acyltransferase which can catalyze Friedel-Crafts C-acylation of phenolic substrates in buffer without the need of CoA-activated reagents. Conversions reach up to >99 %, and various C- or O-acyl donors, such as DAPG or isopropenyl acetate, are accepted by this enzyme. Furthermore the enzyme enables a Fries rearrangement-like reaction of resorcinol derivatives. These findings open an avenue for the development of alternative and selective C-C bond formation methods.

中文翻译：

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生物催化弗里德尔-克来福特酰化和弗里斯反应。

弗里德尔-克来福特酰化通常用于芳基酮的合成，并且尚未引入可能受益于酶的化学和区域选择性的生物催化版本。这里描述的是一种细菌酰基转移酶，它可以催化缓冲液中酚类底物的 Friedel-Crafts C-酰化，而不需要 CoA 激活试剂。转化率高达 >99%，并且该酶接受各种 C-或 O-酰基供体，例如 DAPG 或乙酸异丙烯酯。此外，该酶能够使间苯二酚衍生物发生类似弗里斯重排的反应。这些发现为开发替代性和选择性 CC 键形成方法开辟了道路。