G. Speranza et al., UNCATALYZED REACTION OF PHENOLS AND NAPHTHOLS WITH METHYL CINNAMATES - A SIMPLE SYNTHESIS OF 4-ARYLCHROMAN-2-ONES AND 1-ARYLBENZO[F]CHROMAN-3-ONES, Synthesis, (8), 1997, pp. 931
4-Arylchroman-2-ones and 1-arylbenzo[f]chroman-3-ones can be prepared
in moderate to good yields by reaction of phenols or beta-naphthols wi
th p-substituted methyl cinnamates in o-xylene under reflux.