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- W1980155666 abstract "An asymmetric method for the synthesis of quaternary-substituted indolenines via a 5-endo-dig cyclization of an α-cyanocarbanion onto an isonitrile has been developed. This transformation relies on Brønsted acid activation of the isonitrile functional group under asymmetric phase transfer conditions in the presence of a Brønsted base. Good to excellent levels of enantioselectivity were obtained (85 : 15 to 96 : 4 e.r., 18 examples) using a bespoke bifunctional catalyst. Enantioenriched indolenines produced in this process can be intercepted by nucleophilic species with high levels of diastereoselectivity to generate complex indoline frameworks. This process offers a general asymmetric approach to reactions involving the isonitrile functional group." @default.
- W1980155666 created "2016-06-24" @default.
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- W1980155666 creator A5056474525 @default.
- W1980155666 date "2013-01-01" @default.
- W1980155666 modified "2023-10-17" @default.
- W1980155666 title "Cation-directed enantioselective synthesis of quaternary-substituted indolenines" @default.
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- W1980155666 doi "https://doi.org/10.1039/c3sc50592h" @default.
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