give the corresponding o-benzoquinones was examined. The trapping of o-benzoquinones with o-phenylenediamine immediately after oxidation was successfully used to isolate 2-substituted phenazines, the substituents being –CH3, –CH(CH3)2, –(CH2)2CO2H, –(CH2)2CO2CH3, –CH=CHCO2H, –CH=CHCO2CH3, –(CH2)2NHCOC6H5, and –CH2CH(NHCOC6H5)CO2CH3. Dopaquinone was identified in a protected form.
                                    检测了包括 
DOPA 在内的 4-取代
儿茶酚与邻
氯苯醌或
硫酸铈 (IV) 的氧化反应,以产生相应的邻苯醌。氧化后立即用
邻苯二胺捕获邻苯醌成功地用于分离 2-取代
吩嗪,取代基为 –
CH3、–CH(   )2、–(
CH2)2CO2H、–(   )2CO2   、–CH =CHCO2H、–CH=CHCO2   、–(   )2NHCOC6H5 和 –   CH(NHCOC6H5)CO2   。多巴醌被鉴定为受保护形式。