Question

In the following sequence of reactions. What is D?

• A. Primary amine
• B. An amide
• C. phenyl isocyanate
• D. chain lengthened hydrocarbon

Answer 1

The correct option is C phenyl isocyanate

$C_6{H}_{5}C{H}_3\underset{}{\overset{\left[o\right]}{\to }}{C}_6{H}_{5}COOH\underset{-S{O}_2,HCl}{\overset{SOC{l}_2}{\to }}{C}_6{H}_{5}COCl{C}_6{H}_{5}COCl\underset{}{\overset{Na{N}_3}{\to }}{C}_6{H}_{5}CO{N}_3\underset{}{\overset{\Delta }{\to }}{C}_6{H}_{5}NCO$