Mass spectrometric studies of some Michael adducts

ABSTRACT

The reaction products from l-phenyl-3- [p-substituted phenyl]- 2-propenones and ethyl cyanoacetate in slightly or strong basic media have been isolated. Their structures were established as ethyl 2-cyano -5-oxo-5-phenyl-3-[p-substituted phenyl] pentanoates and 2-benzoyl-4-cyano-4-carboethoxy-l -phenyl-3,5 -di[p-substituted phenyl] cyclohexanols, respectively from their mass spectra. The proposed fragmentation patterns are interpreted