[5-(TERT-BUTYL)-2-HYDROXYPHENYL](PHENYL)METHANONE

Preparation by Fries rearrangement of p-tertbutylphenyl benzoate with,
? titanium tetrachloride without solvent at 140° for 15 min (47%) or in nitromethane at r.t. for 7 days (29%) ;
? aluminium chloride without solvent at 180° for 15 min (35%).