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Chemistry 3 Marks Question

Amines · Gujarat Board (GSEB) STD 12 Science (GSEB - English Medium). 4 questions.

Questions

3 Marks Question

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4 questions · self-marked practice — reveal the answer and mark yourself.

Question 13 Marks
How do you prepare $p-$bromoaniline and $o-$bromoaniline from aniline? Explain.
Answer
Due to the high reactivity of aniline towards electrophilic substitution reaction, substitution occurs at both the $o-$ and $p-$ positions. Therefore, to make a single substituted derivative of aniline, it is first protected by acetylation to reduce the activation effect of the $-NH_2$ group.
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Question 23 Marks
Write the reaction of methyl amine with the following :
(i) $HAuCl _4$
(ii) $H _2 PtCl _6$
(iii) $CH _3 COCl$
(iv) $C _6 H _5 COCl$
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Question 33 Marks
Write the equations of the reactions of forming primary amines by the following methods:
(a) Hydrolysis of alkyl isocyanide
(b) Reductive amination of carbonyl compounds
(c) Alkaline hydrolysis of alkyl isocyanate
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Question 43 Marks
Give equations required for the following changes:
(i) Ethanal to methanamine
(ii) Ethanocyl chloride to methanamine
(iii) Ethanoic acid to propan-1-amine.
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