diazonium replacement

Question

Replacement of diazonium with –OH occurs by heating aqueous solution yielding:

RankGuru · Accepted Answer

1. **Reactant**: A benzene diazonium salt ($C_6H_5N_2^+Cl^-$).
2. **Conditions**: Simply warming the aqueous solution of the diazonium salt to about $50–100^\circ C$.
3. **Chemical Change**: The $N_2$ group departs as a gas, and the vacant position is attacked by a water molecule acting as a nucleophile.
4. **Mechanism**: $C_6H_5N_2^+Cl^- + H_2O \xrightarrow{\Delta} C_6H_5OH + N_2 \uparrow + HCl$.
5. **Result**: **Phenol** is produced. This is a very efficient way to convert aniline (via diazonium) into phenol.

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diazonium replacement

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