화학공학소재연구정보센터
Chemistry Letters, Vol.44, No.12, 1652-1654, 2015
Zinc-catalyzed Enantioselective Electrophilic Amination of beta-Ketocarbonyl Compounds with Axially Chiral Phenanthroline Ligands
Zinc-catalyzed asymmetric alpha-amination of beta-ketocarbonyl compounds 2 using dialkyl azodicarboxylates 3 as the electrophilic nitrogen source is described. The complexes of Zn(OTF)(2) and the axially chiral phenanthroline ligands (S)-1 were identified as effective catalysts for this transformation to provide alpha-amino-beta-ketocarbonyl compounds 4 with up to 93% ee.