Bulletin of the Chemical Society of Japan p. 1522 - 1526 (1992)
Update date:2022-08-11
Topics:
Shimizu, Masao
Watanabe, Yoshihito
Orita, Hideo
Hayakawa, Takashi
Takehira, Katsuomi
2,4,6-Trimethylphenol was effectively oxidized to trimethyl-p-benzoquinone with molecular oxygen in the presense of a catalytic amount of copper(II) chloride-amines in alcohol at ambient temperature.Various amines could be used as a co-catalyst in the presence of acids, and especially hydroxylamine hydrochloride and acetone oxime coupled with hydrochloric acid showed high activity. 2,6-Dimethyl-p-benzoquinone was also obtained from 2,6-dimethylphenol in good yield in this catalytic oxidation system.
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