39604-64-3

Preparation by partial methylation of 2,4-di-hydroxyphenyl 4-methoxybenzyl ketone,
with methyl iodide in the presence of potassium carbonate in boiling acetone during 3 h (83%);
with dimethyl sulfate, in the presence of potassium carbonate in boiling acetone ;
with diazomethane in ethyl ether.