Question

Which of the following compounds can be regenerated to carbonyl compounds :

• A. oximes, hydrazones
• B. oximes, bisulphite complex
• C. bisulphite complex hydrazones
• D. all the above

Answer 1

The correct option is D all the above

Option D - Oximes, hydrazones and bisulphite complexes all can be converted into carbonyl compounds by hydrolysis in acidic or basic medium.

$(C{H}_3{)}_{2}C=N-OH\underset{hydrolysis}{\overset{H^{+}orO{H}^{-}}{\to }}(C{H}_3{)}_{2}C=O+H_{2}N-OH$

$(C{H}_3{)}_{2}C=N-NH-Ph\underset{hydrolysis}{\overset{H^{+}orO{H}^{-}}{\to }}(C{H}_3{)}_{2}C=O+H_{2}N-NH-Ph$

$\left(C{H}_3{)}_{2}C\right(-OH)-S{O}_{3}Na\underset{hydrolysis}{\overset{H^{+}orO{H}^{-}}{\to }}(C{H}_3{)}_{2}C=O+NaHS{O}_3$