Synthesis of 3-Arylated 3,4-Dihydrocoumarins: Combining Continuous Flow Hydrogenation with Laccase-Catalysed Oxidation
作者:Sanel Suljić、Jörg Pietruszka
DOI:10.1002/adsc.201300990
日期:2014.3.24
laccase‐catalysed oxidation/Michael addition sequence is applied using commercially available laccase from Agaricus bisporus. 3,4‐Dihydrocoumarins were obtained in a rapid and facile two‐step sequence starting from salicylaldehydes: The corresponding coumarins were synthesised through a Knoevenagel condensation in up to 83% yield followed by a quantitative reduction performed in a flow system. Combining the reductive