You visited us 2 times! Enjoying our articles? Unlock Full Access!

Dehydration of Alcohols

A compound 'X...

Question

A compound ' $X$ ' on treatement with $B r_{2} / N a O H$ provided $C_{3} H_{9} N,$ which gives positive carbylamine test. Compound ' $X$ ' is:

C H_{3} C O C H_{2} N H C H_{3}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C H_{3} C H_{2} C H_{2} C O N H_{2}

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

C H_{3} C O N (C H_{3})_{2}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C H_{3} C H_{2} C O C H_{2} N H_{2}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B $C H_{3} C H_{2} C H_{2} C O N H_{2}$
The molecular formula, $C_{3} H_{9} N$ refers to four structural isomers of amines:

Here, only (a) and (b) (primary amines) can be prepared from their respective amides by Hoffmann bromamide $(B r_{2} / N a O H)$ method and can give positive carbylamine test.

So, ' $X$ ' can be $C H_{3} C H_{2} C H_{2} C O N H_{2} (P)$
or $C H_{3} C H (C O N H_{2}) C H_{3} (Q)$
Carbylamine test given by (P) and (Q):

As $(Q)$ is not among the given options So, it is ruled out and therefore compound $(X)$ is $C H_{3} C H_{2} C H_{2} C O N H_{2} .$

Suggest Corrections

Similar questions

X

C_{7} H_{7} N O

{B r}_{2}

K O H

X

Y

Y

Y

Z

X

X

C_{7} H_{7} N O

{B r}_{2}

K O H

X

Y

Y

X

Join BYJU'S Learning Program