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EEL - USP

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)<br />

OH<br />

H + + FeBr 4<br />

H<br />

Br<br />

OH<br />

HBr + FeBr 3<br />

Br + H +<br />

orto bromo fenol<br />

HO NO 2 + HHSO 4 H 2O NO 2 H 2O + NO 2 + HSO 4<br />

OH<br />

OH<br />

H + + HSO 4<br />

c) H2SO4 O S<br />

OH<br />

+ NO 2<br />

H<br />

NO 2<br />

H 2SO 4<br />

H + + HSO 4<br />

OH<br />

H<br />

NO 2<br />

estabiliza-se por<br />

ressonância<br />

OH<br />

NO 2<br />

orto nitro fenol<br />

+ H<br />

O O<br />

O<br />

O<br />

O<br />

+ SO 3<br />

O<br />

S<br />

OH<br />

O<br />

H<br />

SO 3<br />

estabiliza-se por<br />

ressonância<br />

O<br />

S<br />

O<br />

O<br />

S<br />

O<br />

183

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