Asymmetric Robinson-type annulation reaction between β-ketoamides and α,β-unsaturated ketones

J Org Chem. 2015 Apr 17;80(8):3798-805. doi: 10.1021/jo502904n. Epub 2015 Mar 30.

Abstract

Enantioselective Robinson-type annulation reaction between β-ketoamide and α,β-unsaturated ketone was developed by utilizing the amino acid derived primary-secondary diamine catalysts. The less reactive acyclic β-ketoamides employed as both electrophile and nucleophile are reported in this asymmetric tandem reaction. A number of chiral cyclohexenone derivatives containing an amide group were obtained in high yields and good selectivities.