Ultrasound Assisted Nitrato6is(triphenyl phosphine)Copper(I)Catalyzed Conjugate Addition of Alkyl or Aryl Bromides to a,|3-Unsaturated Cyanoester

摘要

The α,β-unsaturated cyanoester was obtained fromp-methoxy benzaldehyde and ethyl cyano acetate by reported method.The conjugated addition products were synthesized from alkyl or aryl bromides and a,(3-unsaturated cyanoester in the presence of 10 mol % Cu(I)catalyst in high yields within 17-21 min under ultrasound irradiation.