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Report | Regular issue | Vol 20, No. 12, 1983, pp.2401-2404
Published online, 1st January, 1970
DOI: 10.3987/R-1983-12-2401
Reactivity of Arylcinnamates in Polyphosphoric Acid (PPA): Cyclisation and Rearrangement Reactions

Jean-François E. Dupin and Jacques Chenault

*Laboratoire d’etude des Composéa Phénoliques, U.E.R. de Sciences Fondamentales et Appliqués, Université d’Orléans, BP 6759, Rue de Chartres, 45067 Orleans Cedex 2, France


In polyphosphoric acid (PPA), various phenyl-substituted cinnamates react to give 4-phenyl-3,4-dihydrocoumarins, flavanones or 3-phenylindanone owing to the nature of the substituents on the phenyl moiety.