1. The accumulative coefficients of carps decrease by the rise of phenolate concentration.

2. The formation of these two isomeric products is accounted for by the ambident nature of the nucleophilic phenolate ion in the displacement of the acetoxy leaving group.

3. Whereas the resulting phenolate as reaction product of 1,4-Benzoquinone (hydroquinone) is nucleophilic, a similar oxidant - 3,3',5'5-tetra-tert-butyldiphenoquinone - can be used in the presence of sensitive