3. Aqueous nitrous acid (HONO) converts primary amines (RNH2) into diazonium ion

Question

3. Aqueous nitrous acid (HONO) converts primary amines (RNH2) into diazonium ions (RN2). Which of the following statements is false? R-NH2 HONO a. Heating a mixture of a primary amine with -hydrogens and HONO will necessarily result in elimination by the El mechanism. b. -N2 is a good leaving group. c. When R is a primary alkyl group and a weak nucleophile d. Formation of RN2 from HONO and RNH2 involves an e. When R is a tertiary alkyl group, elimination of R-N2 is such as ethanol is present, SN2 will occur predominantly. elimination process not possible.

Explanation / Answer

Option (e) if false as the N2+ has high tendency to leave from its parents molecule leaving the molecule a carbocation. Now for tertiary alkyl group the carbocation being highly stable this will go much faster way.

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