5570-72-9

Preparation by Fries rearrangement of 2,4- dimethylphenyl propionate, with aluminium chloride, without solvent, at 100° for 7 h (63%) ,
130–140° for 5 h (90%), 165° for 1 h (74%) or in nitromethane at 20° for 7 h (72%) ;
with titanium tetrachloride at 100° for 7 h (83–86%).