Nitration of phenyl acetate (compound A) results in para substitution of the nitro group. However, nitration of

Question:

Nitration of phenyl acetate (compound A) results in para substitution of the nitro group. However, nitration of dimethyl phenyl phosphate (compound B) results in meta substitution of the nitro group. Suggest a reason that the two compounds nitrate in different positions. H3C-C-O- A 0 CH3O-P-0 OCH3 B