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EEL - USP

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Em meio aquoso, forma-se o ácido correspondente<br />

R C<br />

O<br />

+ OH 2 R C<br />

12) Rearranjo de Curtius<br />

O<br />

OH 2<br />

R C<br />

Forma-se também um sal de diazônio que se decompõe<br />

formando isocianato.<br />

O<br />

R C<br />

O<br />

R C N<br />

HNO 2<br />

O<br />

NH 2 R C N N N N 2 + R C<br />

O C N R O C N R<br />

Se fizermos a hidrólise do isocianato, obteremos:<br />

R N C O + OH 2 R N C O<br />

R N C<br />

R N C<br />

H<br />

O<br />

OH 2<br />

O<br />

OH<br />

1°<br />

Β<br />

Δ<br />

C<br />

R N C<br />

H<br />

R N<br />

OH<br />

O<br />

H<br />

O<br />

OH 2<br />

OH<br />

CO 2<br />

-H<br />

R NH 2<br />

O<br />

OH<br />

O<br />

N<br />

147

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