Which of the following reactions will not give primary amine as the product? [2023]

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Q.
Which of the following reactions will not give primary amine as the product [2023]

1 ${CH}_{3} NC \to_{(ii) H_{3} O^{+}}^{(i) {LiAlH}_{4}} Product$

2 ${CH}_{3} {CONH}_{2} \to_{(ii) H_{3} O^{+}}^{(i) {LiAlH}_{4}} Product$

3 ${CH}_{3} {CONH}_{2} \overset{{Br}_{2} / KOH}{\to} Product$

4 ${CH}_{3} CN \to_{(ii) H_{3} O^{+}}^{(i) {LiAlH}_{4}} Product$

Ans.
(1)

${CH}_{3} NC \to_{(ii) H_{3} O^{+}}^{(i) {LiAlH}_{4}} \underset{2 ° amine}{{CH}_{3} {NHCH}_{3}}$

${CH}_{3} CN \to_{(ii) H_{3} O^{+}}^{(i) {LiAlH}_{4}} \underset{1 ° amine}{{CH}_{3} {CH}_{2} {NH}_{2}}$

${CH}_{3} {CONH}_{2} \overset{{Br}_{2} / KOH}{\to} \underset{1 ° amine}{{CH}_{3} {NH}_{2}}$

${CH}_{3} {CONH}_{2} \to_{(ii) H_{3} O^{+}}^{(i) {LiAlH}_{4}} \underset{1 ° amine}{{CH}_{3} {CH}_{2} {NH}_{2}}$

Solution

Q.
Which of the following reactions will not give primary amine as the product [2023]

1 ${CH}_{3} NC \to_{(ii) H_{3} O^{+}}^{(i) {LiAlH}_{4}} Product$

2 ${CH}_{3} {CONH}_{2} \to_{(ii) H_{3} O^{+}}^{(i) {LiAlH}_{4}} Product$

3 ${CH}_{3} {CONH}_{2} \overset{{Br}_{2} / KOH}{\to} Product$

4 ${CH}_{3} CN \to_{(ii) H_{3} O^{+}}^{(i) {LiAlH}_{4}} Product$

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Solution

Q. Which of the following reactions will not give primary amine as the product [2023]

1 CH3NC→(ii) H3O+(i) LiAlH4Product

2 CH3CONH2→(ii) H3O+(i) LiAlH4Product

3 CH3CONH2→Br2/KOHProduct

4 CH3CN→(ii) H3O+(i) LiAlH4Product

Ans. (1) CH3NC→(ii) H3O+(i) LiAlH4CH3NHCH32° amine CH3CN→(ii) H3O+(i) LiAlH4CH3CH2NH21° amine CH3CONH2→Br2/KOHCH3NH21° amine CH3CONH2→(ii) H3O+(i) LiAlH4CH3CH2NH21° amine

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Q.
Which of the following reactions will not give primary amine as the product [2023]

1 ${CH}_{3} NC \to_{(ii) H_{3} O^{+}}^{(i) {LiAlH}_{4}} Product$

2 ${CH}_{3} {CONH}_{2} \to_{(ii) H_{3} O^{+}}^{(i) {LiAlH}_{4}} Product$

3 ${CH}_{3} {CONH}_{2} \overset{{Br}_{2} / KOH}{\to} Product$

4 ${CH}_{3} CN \to_{(ii) H_{3} O^{+}}^{(i) {LiAlH}_{4}} Product$