ABSTRACT
Promoted by SmI3, α,β-unsaturated ketones reacted with malononitrile, ethylcyanoacetate, diethylmalonate, β-ketoester or nitromethane to give the 1,4-adducts in moderate to good yields.
ACKNOWLEDGMENT
We are grateful to the National Natural Science Foundation of China (Project No. 29872010) and the NSF of Zhejiang Province, China for financial support.