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Enantioselective construction of a C2-symmetric spirobi(1,2,3,4-tetrahydroquinoline) fra mework has been achieved through an intramolecular Cu-catalyzed C‐N bond coupling of 1,3propanediamide substrates possessing bromophenyl substituents. The use of N,N’-dimethyl-1,2diphenylethylenediamine as the chiral ligand was fo und to be essential in this asymmetric catalysis. Optically pure compound was shortly obt ained by a single recrystallization of the enantioenriched product, which was successfully der ivatised to a new chiral diphosphine ligand.

Enantioselective construction of C2-symmetric spiro skeleton through intramolecular copper-catalyzed N-arylation