Question

At higher temperature, iodoform reaction is given by

• A. $CH _{3} CO _{2} CH _{3}$
• B. $CH _{3} CO _{2} C _{2} H _{5}$
• C. $C _{6} H _{5} CO _{2} CH _{3}$
• D. $CH _{3} CO _{2} C _{6} H _{5}$

Answer 1

Answer: (B)

Only $CH_3COOC_2H_5$ will give ethanol, $C_2H_5OH$ after hydrolysis (which can give positive iodoform test).

$CH_3COOCH_3 \rightarrow CH_3COOH + CH_3OH$

$CH_3COOC_2H_5 \rightarrow CH_3COOH + CH_3CH_2OH$

$C_6H_5COOCH_3 \rightarrow C_6H_5COOH + CH_3OH$

$ CH_3COOC_6H_5 \rightarrow CH_3COOH + C_6H_5OH$