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Question

Question: For the reaction \(\mathrm { R } - \mathrm { Br } \longrightarrow \mathrm { R } - \mathrm { O } - \...

For the reaction

R−Br⟶R−O−N=O\mathrm { R } - \mathrm { Br } \longrightarrow \mathrm { R } - \mathrm { O } - \mathrm { N } = \mathrm { O }the suitable reagent is

A

NaNO2+HCL

B

HNO2

C

AgNO2

D

KNO2

Answer

KNO2

Explanation

Solution

R−Br→R−O−N=OR - Br\overset{\quad\quad}{\rightarrow}R - O - N = O

Alkyl halide Alkyl nitrities

Alkyl nitrities are prepared by the action of alkyl halide and potassium nitrite only but in case of silver nitrite the main product is nitro alkane although a small amount of alky nitrite is also formed.

R−Br+KNO2⟶R−O−N=O+KBr\mathrm { R } - \mathrm { Br } + \mathrm { KNO } _ { 2 } \longrightarrow \mathrm { R } - \mathrm { O } - \mathrm { N } = \mathrm { O } + \mathrm { KBr }