Abstract Preparation of a series of substituted diquinones is reported. In most examples, inverse order of addition (addition of a dimethoxybenzene derivative to a CAN solution) has been found to produce higher yields of diquinones than the traditional protocol in which the oxidant is added to the arene.
![[Bi-1,4-cyclohexadien-1-yl]-3,3',6,6'-tetrone,4,4'-dimethoxy- Structure](https://image.chemsrc.com/caspic/344/43042-33-7.png)