Chiral Indoline Synthesis Via Enantioselective Intramolecular Copper-Catalyzed Alkene Hydroamination.

An enantioselective copper-catalyzed hydroamination / cyclization of N-sulfonyl-2-allylanilines for the synthesis of chiral 2-methylindolines is reported. Chiral 2-methylindolines are important subunits in drugs and bioactive compounds. This method provides chiral N-sulfonyl-2-methyl indolines in up to 90% ee.

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