Laccase-catalysed α-arylation of cyclic β-dicarbonyl compounds
作者:Jörg Pietruszka、Chuan Wang
DOI:10.1039/c2gc35662g
日期:——
In this protocol we described an environmentally friendly synthesis of α-arylated cyclic β-dicarbonyl compounds employing various catechols as precursors through an oxidation/Michael addition sequence. The process proceeded under the catalysis of a commercially available laccase at room temperature with the use of aerial oxygen as the oxidant affording the products in moderate to excellent yields (36–96%)
A tyrosinase‐mediated arylation reaction is presented. Starting from a variety of substituted phenols, the enzyme generates activated o‐quinones, which subsequently can undergo a 1,4‐addition towards the desired arylation products, processing a quaternary center.