Cupreine grafted onto silica as an enantioselective and recyclable catalyst for the 1,4-addition of malonate to trans-β-nitrostyrene†
Abstract
Preparation of silica supported cupreine (CPN) and its high catalytic performance for the asymmetric 1,4-addition of dimethyl malonate to trans-β-nitrostyrene in some biomass-derived solvents (2-methyl THF, EtOAc and EtOH) are reported for the first time.