Steric tuning in chiral ligand mediated enantioselective alkylation of imines
摘要:
Enantioselective alkylation of achiral aldimines 4 prepared from 2-methylanisidine with organolithiums was mediated by a chiral aminoether 1 to give the corresponding amines 5 in high ee.
Enantioselective alkylation of achiral aldimines 4 prepared from 2-methylanisidine with organolithiums was mediated by a chiral aminoether 1 to give the corresponding amines 5 in high ee.
Asymmetric 1,2-addition of organolithiums to aldimines catalyzed by chiral ligand
An asymmetric 1,2-addition reaction of organolithiums with imines 3, 7 was catalysed by a 0.05–1.3 equivalent of a chiral amino ether 2 to provide the corresponding optically active amines 4, 8.