Hofmann utilized a specific reagent to separate mixtures of , , and amines based on the distinct physical states of their derivatives (solid, liquid, unreacted). Which reagent is this?

Question

Hofmann utilized a specific reagent to separate mixtures of $1^\circ$, $2^\circ$, and $3^\circ$ amines based on the distinct physical states of their derivatives (solid, liquid, unreacted). Which reagent is this?

Prashant Kotian · Accepted Answer

Correct answer: B. Diethyl oxalate cleanly separates the classes: amines form a solid dialkyl oxamide; amines react partially due to steric bulk, yielding a liquid dialkyl oxamic ester; amines completely fail to react.

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