90959-19-6Relevant articles and documents
Michael Addition of Ylidenpyrazolones
Khalifa, Fathy A.,Abdel-Galil, Fathy M.,Riad, Bahia Y.,Elnagdi, Mohamed H.
, p. 1158 - 1159 (2007/10/02)
The reactivity of ylidenpyrazolones (1a-c) towards compounds bearing an activated double bond has been investigated.Ia on treatment with acrylonitrile furnishes the amide (II) while with ethyl acrylate, N-arylmaleimides and dimethyl acetylendicarboxylate, the Michael adducts (IV-VI) are obtained.The reaction of Ib and Ic with acrylonitrile and ethyl acetate gives the adducts VII.