Enantioselective Decarboxylative Propargylation/Hydroamination Enabled by Organo/Metal Cooperative Catalysis
2018
The first catalytic enantioselective decarboxylative propargylation/hydroamination reaction of ethynyl benzoxazinanones with malononitriles enabled by organo/copper cooperative catalysis was established. Various 3-indolin-malononitrile derivatives, displaying a high tolerance for functional groups, could be obtained in good yields with high levels of enantioselectivity (up to 85% yield, 96:4 er). More importantly, this organo/metal cooperative catalytic system will provide a powerful synthetic strategy for new reaction development.
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