Oxidation Using Quaternary Ammonium Polyhalides. VIII. Oxidation of 1,4-Benzenediols with Benzyltrimethylammonium Tribromide
作者:Shoji Kajigaeshi、Yukihiro Morikawa、Shizuo Fujisaki、Takaaki Kakinami、Keigo Nishihira
DOI:10.1246/bcsj.64.336
日期:1991.1
The reaction of 1,4-benzenediols with 1.1 equiv of benzyltrimethylammonium tribromide in dichloromethane in the presence of aqueous sodium acetate at room temperature gave 2,5-cyclohexadiene-1,4-diones in good yields. On the other hand, the reaction of 1,4-benzenediols with a large excess of the reagent in aqueous acetic acid at 40–60°C gave polybromo-substituted 2,5-cyclohexadiene-1,4-diones in good
1,4-苯二醇与1.1当量的苄基三甲基三溴化铵在二氯甲烷中在乙酸钠水溶液存在下在室温下反应以良好的产率得到2,5-环己二烯-1,4-二酮。另一方面,1,4-苯二醇与大量过量的试剂在 40-60°C 的乙酸水溶液中反应得到多溴取代的 2,5-环己二烯-1,4-二酮,收率良好。