Name: SN2 Reaction
Uploaded: 2019-07-19
Duration: 1 min 59 s
Description: In the SN2 reaction, nucleophiles attack from the back side of the carbon. So the product assumes a stereochemical position opposite to the leaving group.

Question

Draw the Fischer projection formulae of two products obtained when compound ( $A$ ) reacts with ${OH}^{-}$ by $S_{N} 1$ mechanism.

Accepted Answer

The compound ( $A$ ) when reacts with hydroxide ions, it undergoes substitution reaction through ${S_{N}}^{1}$ mechanism, as it forms a stable tertiary carbocation intermediate, and the product is the corresponding alcohol. ${S_{N}}^{1}$ reactions are accompanied by racemisation, hence there is a formation of racemic mixture.

Fischer's projection formula convention is used to depict a stereoformula in two dimension without destroying the absolute configuration at chiral centres. The chiral centre is on the plane of the paper, two bonds are coming out of the plane of the paper and are on a horizontal plane, the two remaining bonds are going into the plane of the paper and are on a vertical plane.

Fischer's projection formulae are as shown below:

Maharashtra Board Solutions for Chapter: Halogen Derivatives, Exercise 9: Use your brain Power

Maharashtra Board Chemistry Solutions for Exercise - Maharashtra Board Solutions for Chapter: Halogen Derivatives, Exercise 9: Use your brain Power

Questions from Maharashtra Board Solutions for Chapter: Halogen Derivatives, Exercise 9: Use your brain Power with Hints & Solutions

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