Trimethyl-para-benzoquinone prepn - by oxidn of trimethyl -para-halo-phenols

摘要

Title cpd is prepd. by oxidn of a 2,3,5-trimethyl or a 2,3,6-trimethyl-p-halophenol pref. with chromic acid, nitric acid, permanganic acid or a peroxide. Trimethylparabenzoquinone may be reduced to trimethylhydroquinone useful as an inter. in the prepn of vitamin E.