Primary aliphatic and aromatic amines react with nitrous acid forming arena diazonium salts while the reaction of secondary amines gives N-nitrosamines (R2NN=O). Now, let’s take a closer look and see how this happens starting with the formation of arena diazonium salts. Nitrous acid does not direclty react with the amino group.
Full Answer
Which of the following amines can give N Nitrosoamine on treatment with HNO2?
Secondary aminesSecondary amines yield N-nitro amines when treated with nitrous acid. Hence the answer is option D.
Which one of the following amines gives an alcohol with nitrous acid?
Aliphatic primary amines react with cold nitrous acid to give alcohols with the quantitative evolution of N2 gas.
What does nitrous acid react with?
Nitrous acid (HNO2 or HONO) reacts with aliphatic amines in a fashion that provides a useful test for distinguishing primary, secondary and tertiary amines. This happens with 3º-amines, and the salts are usually soluble in water.
How does 1/2 and 3 amines react with nitrous acid?
When secondary amine is made to react with the nitrous acid, it results in the formation of nitrosamines which are yellow in color and oily in nature. When tertiary amine is made to react with the nitrous acid, it results in the formation of a salt which on warming decomposes to give nitrosamines and alcohol.
Which of the following is converted into an alcohol on treatment with nitrous acid?
Methyl amineWhich of the following is converted into an alcohol on treatment with HNO2? Explanation: Methyl amine is converted into an alcohol on treatment with HNO2.
How does amine react with nitrous acid?
Primary amines react with nitrous acid to yield a diazonium salt, which is highly unstable and degradates into a carbocation that is capable of reaction with any nucleophile in solution. Therefore, reacting primary amines with nitrous acid leads to a mixture of alcohol, alkenes, and alkyl halides.
What is nitrous acid test for amines?
(d) Nitrous Acid Test: An aromatic primary amine reacts with nitrous acid forms a diazonium salt and at higher temperatures the formed diazonium compounds undergoes decomposition. Primary aliphatic amines react with nitrous acid to give nitrogen gas, which is seen as bubbles.
When secondary amines react with nitrous acid they form?
Alkanamines with Nitrous Acid With a secondary amine, the reaction stops here, with formation of R2N−NO, and because these substances are very weak bases, they are insoluble in dilute aqueous acids. They are characteristically yellow or orange-yellow solids or oils.
Question
Which one of the following amines gives an N-nitrosoamine on treatment with nitrous acid, HN O2 H N O 2 ?
Amines
The amines are the examples of functional group which has the chemical formula of −NH2 − N H 2 . The degree of amine depends upon the alkyl group's number connected to the amino group. Primary amines have one alkyl group, secondary amines have 2 alkyl groups and the tertiary group has 3 alkyl groups connected to the amino nitrogen atom.