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Composti Carbonilici - ITIS E. Divini

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Addizione Nucleofila ad Aldeidi e Chetoni<br />

Meccanismo:<br />

O<br />

C<br />

O<br />

C<br />

H+<br />

OH<br />

C<br />

Nu<br />

Nu<br />

intermedio<br />

tetraedrico<br />

Nu<br />

Con alcuni nucleofili neutri l’addizione ha luogo solo con catalisi acida.<br />

O<br />

C<br />

OH<br />

H+ OH<br />

–H +<br />

C<br />

C<br />

HNu<br />

HNu<br />

intermedio<br />

tetraedrico<br />

OH<br />

C<br />

Nu<br />

17

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