A solid-supported arylboronic acid catalyst for direct amidation
作者:Yihao Du、Thomas Barber、Sol Ee Lim、Henry S. Rzepa、Ian R. Baxendale、Andrew Whiting
DOI:10.1039/c8cc09913h
日期:——
An efficient heterogeneous amidation catalyst has been prepared by co-polymerisation of styrene, DVB with 4-styreneboronic acid, which shows wide substrate applicability and higher reactivity than the equivalent homogeneous phenylboronic acid, suggesting potential cooperative catalytic effects. The catalyst can be easily recovered and reused; suitable for use in packed bed flow reactors.
A practical, highly enantioselective method for the synthesis of short-chain aliphatic beta-amino acidesters was developed starting from prochiral and easily accessible Substrates. This chemoenzymatic approach is based oil a nonenzymatic aza-Michael addition of benzylamine to enoates and subsequent lipase-catalyzed resolution via enantioselective aminolysis. The two reactions are carried out as a