NTA Abhyas NEET2020ChemistryAminesPractice
A compound 'X' on treatment with B r 2 / N a O H , provided C 3 H 9 N (Y) which gives positive carbylamine test. Compound 'X' is
Options
- AC H 3 C O C H 2 N H C H 3
- BC H 3 C H 2 C O C H 2 N H 2
- CC H 3 C H 2 C H 2 C O N H 2
- DC H 3 C O N ( C H 3 ) 2
Correct answer
C. C H 3 C H 2 C H 2 C O N H 2
Step-by-step solution
X → Br 2 / NaOH C 3 H 9 N Y As Y gives +ve carbylamine test so it is a primary amine and X is an amide which on Hoffmann's bromamide degradation gives amine Y. CH 3 CH 2 CH 2 CONH 2 = X → Br 2 +NaOH CH 3 CH 2 CH 2 NH 2 Option ( 2 ) is not possible as it is not an amide. ( 1 , 4 ) are not possible as they will not give 1° amine on degradation.