मराठी
महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

Write a short note on Hofmann elimination

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प्रश्न

Write a short note on Hofmann elimination

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उत्तर

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).

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2018-2019 (March) Set 1

संबंधित प्रश्‍न

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

Explain carbylamine reaction with suitable examples.


Answer the following.

What is the action of acetic anhydride on ethylamine?


Answer the following.

What is the action of acetic anhydride on diethylamine?


Answer the following

Write diazotisation reaction of aniline?


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.

Nitroalkane to Alkylamine


Acylation of ethanamine to form N-ethylethanamide is an example of ____________ reaction.


Identify the amine formed when ethyltrimethyl ammonium iodide is treated with silver hydroxide and further heated strongly.


Select the CORRECT option about the following reaction.

\[\ce{CH3 - CH2 - N^+(CH3)3 - I^- ->[Moist][Ag2O] X ->[\Delta] Y + Z + H2O}\]


\[\ce{X ->[LiAlH4 in ether] Y ->[C2H5Br] Z -> Triethylamine}\]

X and Z are ____________ respectively.


α-chlorosodium acetate on boiling with aqueous sodium nitrite gives ______.


Which group from following decreases the basic strength in substituted aniline?


Which one of the following methods is NOT used for the synthesis of amines?


\[\ce{Dimethylamine + Benzoyl chloride ->[Pyridine] ?}\]

Product formed is:


Which of the following amines liberates nitrogen gas when treated with nitrous acid?


What is the product obtained when ethyl amine is heated with large excess of ethyl iodide?


Select the compound which on treatment with nitrous acid liberates nitrogen.


Write the reaction of Acetyl chloride on triethylamine.


Convert Methyl iodide to methyl isocyanide


Above reaction is known as ______.


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