In continuation of our studies on the pinacolpinacolone rearrangement, we have prepared ten symmetrical aromatic pinacols of the type RIR~ C-(OH)(HO) CReR1 and have subjected them to rearrangement. We were particularly interested in pinacols containing the p- ethoxyphenyl (phenetyl) and, m-methoxyphenyl groups in order to obtain the migration aptitudes of these groups. Bachmann and &losera found that it is possible to predict ...