Question

rect Question 4 0/20 pts Predict the product for the following SN2 reaction. ♡

Answer 1

The SN2 reaction is a nucleophilic substitution bimolecular reaction where a bond is broken and a new bond is formed simultaneously. The mechanism of this reaction involves a backside attack by the nucleophile on the substrate. The nucleophile approaches the substrate at an angle of 1800 to the leaving group. The carbon-nucleophile bond forms and the carbon- leaving group bond breaks simultaneously through a transition state. Since the nucleophile attacks from the back side, the product assumes a steriochemical position opposite to the leaving group originally occupied.This is called inversion of configuration.

The mechanism of this reaction is,

Cookie an [oct-00 ch 4--CN Nach MILLION Tos

The nucleophile CN- attacks the substrate from the opposite side of the leaving group. Therefore the CN- forms a bond in below plane.

So the correct answer is option II.