Oxidation of Hydroquinones with Oxygen in the Presence of Bis(1,3-propanediaminato)copper(II) Chloride
作者:Spyridon M. Paraskevas、Demetrios Konstantinidis、Georgia Vassilara
DOI:10.1055/s-1988-27745
日期:——
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 75%.
在乙醇中将对苯二酚(如 1,2-二羟基苯、1,4-二羟基苯及其 2-甲基衍生物、1,2,4-三羟基-6-甲基苯、1,2-和 1,4- 二羟基萘)与氧气在双(1、3-丙二胺)氯化铜(II)和几滴乙酸的作用下,发生氧化 C-C 偶联反应,并将对苯二酚氧化成醌系,从而得到相应的生物醌,收率超过 75%。