Gold-Catalyzed C-H Oxidative Polyacyloxylation Reaction of Hindered Arenes
摘要:
The synthesis of polyacyloxylated aromatic derivatives was achieved in moderate yields using a gold-catalyzed C-H activation strategy and di(acetoxy)iodobenzene as an oxidant.
作者:Alexandre Pradal、Patrick Y. Toullec、Véronique Michelet
DOI:10.1021/ol202577c
日期:2011.11.18
A variety of nonactivated hindered aromatic rings are acyloxylated (22 examples, up to 83% yield) in the presence of PPh3AuCl as the catalyst and di(acetoxy)iodobenzene as the oxidant. The reaction proceeds at 110 degrees C in an acid media and allows the formation of both hindered acetoxy and acyloxy derivatives. This methodology nicely complements the Pd-catalyzed arene acyloxylation reaction, which is not operating on hindered substrates and allows the Au-catalyzed unprecedented acyloxylation reaction of arenes, implying various carboxylic acids.
Gold-Catalyzed C-H Oxidative Polyacyloxylation Reaction of Hindered Arenes
作者:Patrick Toullec、Véronique Michelet、Alexandre Pradal、Pierre Faudot dit Bel
DOI:10.1055/s-0032-1316541
日期:2012.8
The synthesis of polyacyloxylated aromatic derivatives was achieved in moderate yields using a gold-catalyzed C-H activation strategy and di(acetoxy)iodobenzene as an oxidant.