Ncert Exercises & Solutions

What is the most suitable reagent for the below mentioned conversion?

${CH}_{3} — CH = CH — {CH}_{2} — \overset{O}{C}$
$| |$ $- {CH}_{3}$ $\to$
${CH}_{3} - CH = CH — {CH}_{2} — \overset{O}{C}$
$| | — OH$

1. Tollens' reagent

2. Benzoyl peroxide

3. $I_{2}$ and NaOH solution

4. Sn and NaOH solution

Hint: Haloform test

lodoform test is used to test presence of - COCH₃ group which is converted into —COOH group.

The reaction is shown below:

{CH}_{3} — CH = CH — {CH}_{2} — \overset{O}{C}

| | — {CH}_{3}

\to (lodoform

reaction) l_{2} / NaOH

solution

{CH}_{3} — CH = CH — {CH}_{2} — \overset{O}{C}

| | — OH

+

{CHI}_{3}

Pent - 3 - en

1 - oic

acid