| 摘要 |
The present invention relates to a process for the preparation of monosubstituted hydroquinone monoacetates, characterised in that a phenol substituted in the ortho or meta position with respect to the OH group is reacted with an acetylating agent chosen from acetyl halides, acetic acid, acetic anhydride or the esters of acetic acid, in hydrogen fluoride, in order to form the corresponding R-substituted hydroxyacetophenone and the said hydroxyacetophenone is oxidised with a percarboxylic acid. The process of the invention is more particularly advantageous for preparing methylhydroquinone acetates, due to the low cost of ortho-cresol or of meta-cresol acting as starting material.
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