JIPMER 2004
- Exam
- JIPMER
- Year
- 2004
- Subject
- Chemistry
- Chapter
- Hydrocarbons
JIPMER 2004 · Chemistry · Hydrocarbons
What is 'X' in the following sequence? Ar. N_2 Cl [KCN] CuCN Z H ....
What is 'X' in the following sequence?
Ar. \mathrm{N}_2 \mathrm{Cl} \xrightarrow[\mathrm{KCN}]{}\xrightarrow{} \xrightarrow[\Delta]{ }
Options
- ABenzoic acid
- BSodium benzoate
- CBenzaldehyde
- DBenzene
Correct answer
D. Benzene
Step-by-step solution
The reaction sequence is as follows:
(\mathrm{ArN}_2 \mathrm{Cl} \xrightarrow[\text{ Sandmeyer's reaction }]{\mathrm{CuCNKCN}}\mathrm{ArCN} \xrightarrow{\mathrm{H} . \mathrm{OH}} \underset{\text{benzoic acid}}{\mathrm{C}_6 \mathrm{H}_5 \mathrm{COOH}}\xrightarrow[\text{ decarboxylation }]{\Delta \text{, sodalime }} \underset{\text{ benzene }}{\mathrm{C}_6 \mathrm{H}_6})