# Why is nitration of veratrole specific in these positions?

Why do we not need $\ce{H2SO4}$ as an acid catalyst for the di-nitration of veratrole?

Why does the 2nd nitro group go to positions 4 or 5, following the directing effects of the methoxy-group? Doesn't the first nitro group, that has been substituted onto the compound, have any effect on its position?

• You'll get 3,5 substituted dinitro because of 1st nitro group effect. – Mithoron Jun 28 '15 at 22:01