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A simple and efficient Knoevenagel condensation between a b-unsaturated aldehydes and active methylene compounds is reported.Notably,this condensation can be catalyzed by PPL(lipase from porcine pancreas) with satisfied yields(49%–92%).Moreover,PPL induces moderate Z/E selectivity in the Knoevenagel condensation.
A simple and efficient Knoevenagel condensation between a b-unsaturated aldehydes and active methylene compounds is reported. Notably, this condensation can be catalyzed by PPL (lipase from porcine pancreas) with satisfied yields (49% -92%). Z / E selectivity in the Knoevenagel condensation.