Discussion Forum



1)

 The conversion of ethyl bromide using  sodium and dry acetone , this reaction is known as


A) swarts reaction

B) Finkelstein reaction

C) Sandmeyer reaction

D) Stephen reaction

Answer:

Option B

Explanation:

 Alkyl iodides and fluorides are prepared by the SN2 mechanism. Alkyl chlorides or bromides reacts with Nal in dry acetone to given alkyl iodine. This reaction is known as Finkelstein reaction.

$R-X+Nal\rightarrow Rl+NaX[X=Cl,Br]$

e.g,  $C_{2}H_{5}Br+Nal\rightarrow C_{2}H_{5}l+NaBr$