Synthesis p. 897 - 899 (1988)
Update date:2022-08-11
Topics:
Paraskevas, Spyridon M.
Konstantinidis, Demetrios
Vassilara, Georgia
Treatment of hydroquinones such as 1,2-dihydroxybenzene, 1,4-dihydroxybenzene and its 2-methyl derivative, 1,2,4-trihydroxy-6-methylbenzene, 1,2- and 1,4-dihydroxynaphthalene with oxygen in ethanol in the presence of bis(1,3-propanediaminato)copper(II) chloride and a few drops of acetic acid effects oxidative C-C coupling plus oxidation of the hydroquinone to the quinone system to afford the corresponding biquinones in yields exceeding 75percent.
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