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eliminazione HOFFMAN

Da AMMINA AD ALCHENE.


si ottiene ammonio con eccesso di RX


. poi reagisce in H2O con Ag2O formando un ppt


. E infine c'è Beta-Eliminazione a T elevate per ottenere ALCHENE [si toglie l'H più accessibile quindi si ottiene alchene meno sostituito]

HNO2 acido nitroso

Ammina + HNO2

Reazione ammina con NITROSILE e si ottiene il DIAZONIO

Aromatico + HNO2

Reazioni Sandmeyer

Diazionio Aromatico + Nucleofilo



Nu: CuCl, CuBr, CuCN

Formazione N Nitrosammina