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SUSTITUCIÓN ELECTROFÍLICA AROMÁTICA<br />

(SEAR)<br />

H<br />

+ E +<br />

E + = Br +, NO 2 + , SO3, CH 3CH 2 + , CH3CO +<br />

• Benceno: rico en electrones<br />

Diferencia con alquenos y alquinos<br />

Mecanismo de la SEAr<br />

E +<br />

+<br />

+<br />

H E H E H E<br />

+<br />

E<br />

+ H +<br />

- Sustitución de uno de los hidrógenos del anillo por E +<br />

- NO adición electrófila<br />

Puede ser atacado por electrófilos<br />

-H +<br />

E<br />

10

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