Amines

Which of the following ketone will NOT give enamine on treatment with secondary amines? [where t-Bu is $\mathrm{-C(CH_3)_3}$]

Among the following structures, which will show the most stable enamine formation ?

(Where Me is $-\mathrm{CH_3}$)

Which statement is NOT correct for p-toluenesulphonyl chloride?

Given below are two statements :

Statement - I : In Hofmann degradation reaction, the migration of only an alkyl group takes place from carbonyl carbon of the amide to the nitrogen atom.

Statement - II : The group is migrated in Hofmann degradation reaction to electron deficient atom.

In the light of the above statements, choose the most appropriate answer from the options given below :

Decarboxylation of all six possible forms of diaminobenzoic acids $\mathrm{C_6H_3(NH_2)_2COOH}$ yields three products A, B and C. Three acids give a product 'A', two acids gives a product 'B' and one acid give a product 'C'. The melting point of product 'C' is

Identify the major product formed in the following sequence of reactions :

A primary aliphatic amine on reaction with nitrous acid in cold (273 K) and there after raising temperature of reaction mixture to room temperature (298 K), gives a/an

With respect to the following reaction, consider the given statements :

(A) o-Nitroaniline and p-nitroaniline are the predominant products.

(B) p-Nitroaniline and m-nitroaniline are the predominant products.

(C) $\mathrm{HNO_3}$ acts as an acid.

(D) $\mathrm{H_2SO_4}$ acts as an acid.

Choose the correct option.

Consider the above reactions, the product A and product B respectively are

In Friedel-Crafts alkylation of aniline, one gets

An organic compound 'A' on reaction with $\mathrm{NH_3}$ followed by heating gives compound B. Which on further strong heating gives compound C ($\mathrm{C_8H_5NO_2}$). Compound C on sequential reaction with ethanolic KOH, alkyl chloride and hydrolysis with alkali gives a primary amine. The compound A is :

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A) : Experimental reaction of $\mathrm{CH_3Cl}$ with aniline and anhydrous $\mathrm{AlCl_3}$ does not give o and p-methylaniline.

Reason (R) : The $-\mathrm{NH_2}$ group of aniline becomes deactivating because of salt formation with anhydrous $\mathrm{AlCl_3}$ and hence yields m-methyl aniline as the product.

In the light of the above statements, choose the most appropriate answer from the options given below :

Match List I with List II.

Choose the correct answer from the options given below:

An organic compound 'A' contains nitrogen and chlorine. It dissolves readily in water to give a solution that turns litmus red. Titration of compound 'A' with standard base indicates that the molecular weight of 'A' is 131 ± 2. When a sample of 'A' is treated with aq. NaOH, a liquid separates which contains N but not Cl. Treatment of the obtained liquid with nitrous acid followed by phenol gives orange precipitate. The compound 'A' is :

Identify the correct statement for the below given transformation.

$$\mathrm{CH_3{-}CH_2{-}CH_2{-}\underset{\displaystyle\oplus N(CH_3)_3}{\underset{|}{CH}}{-}CH_3\xrightarrow[C_2H_5OH]{C_2H_5ONa}\underset{(Major)}{A}+\underset{(Minor)}{B}}$$

Given below are two statements : One is labelled as Assertion A and the other is labelled as Reason R

Assertion A : Aniline on nitration yields ortho, meta & para nitro derivatives of aniline.

Reason R : Nitrating mixture is a strong acidic mixture.

In the light of the above statements, choose the correct answer from the options given below

Which among the following is the strongest Bronsted base ?

'A' ($\mathrm{C_8H_6Cl_2O}$) reacts with NH$_3$ to give $\mathrm{C_8H_8ClNO}$, which with Br$_2$/NaOH gives 4-chloro-3-methylaniline (shown).

Consider the above reaction, the compound 'A' is :

The Hinsberg reagent is

Which one of the following compounds can be prepared in good yield by Hoffmann bromamide degradation reaction?