Advertisements
Advertisements
Question
Write a short note on Hofmann elimination
Advertisements
Solution
When tetraalkylammonium halide is heated with moist silver oxide, it gives quaternary ammonium hydroxide which is a deliquescent crystalline solid, and strongly basic like NaOH or KOH.
Quaternary ammonium hydroxides on strong heating undergo b-elimination to give an alkene, the reaction is called Hofmann elimination. The least substituted alkene is obtained as a major product (in contrast to Saytzeff elimination).

APPEARS IN
RELATED QUESTIONS
Which one of the following compounds does not react with acetyl chloride?
Answer in one sentence.
How many moles of methyl bromide are required to convert ethanamine to N, N-dimethyl ethanamine?
Answer in one sentence.
Write the balanced chemical equations for the action of dil H2SO4 on diethylamine.
Answer the following
What is diazotisation?
Answer the following.
What is the action of acetic anhydride on diethylamine?
Answer the following.
What is the action of acetic anhydride on triethylamine?
Answer the following
Write diazotisation reaction of aniline?
Write the name of the reaction in which aromatic primary amines produce offensive smell.
Write the name of the gas evolved when a primary amine is reacted with nitrous acid.
Write the reactions to bring about the following conversions.
Alkyl cyanide to Alkylamine
\[\ce{X ->[Sn/HCl] Propan-2-amine}\]
Compound X is ____________.
Which of the following will NOT give positive carbylamine test?
Select the CORRECT option about the following reaction.
\[\ce{CH3 - CH2 - N^+(CH3)3 - I^- ->[Moist][Ag2O] X ->[\Delta] Y + Z + H2O}\]
α-chlorosodium acetate on boiling with aqueous sodium nitrite gives ______.
Which one of the following compounds when heated with KOH and CHCl3 gives carbylamine test?
Which group from following decreases the basic strength in substituted aniline?
Which of the following on heating with chloroform and alcoholic potassium hydroxide yields carbylamine?
Which one of the following methods is NOT used for the synthesis of amines?
Identify reagent 'A' in the following conversion?
\[\ce{N-N Dimethyl aniline ->[A][273-278 K] 4-nitroso-N-N-dimethylaniline}\]
When propanamide is treated with bromine and alcoholic NaOH, it gives ______.
Which of the following amines liberates nitrogen gas when treated with nitrous acid?
Which of the following compounds gives a dye test?
Identify the X in the reaction.
\[\ce{R - NH2 + HNO2 ->[NaNO2 + HCl][273 - 278 K] X ->[H2O] R - OH + N2\uparrow + HCl}\]
Which from following amines forms corresponding alcohol liberating dinitrogen when treated with mixture of NaNO2(aq) and HCI?

Above reaction is known as ______.
