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				   a SN2 rean. at an symmetric carbon of a compnd always gives:1)enantiomer of substrate 2)product with opp. optical rotation 3)mix. of diasteromers 4)single steroisomer. plz explain concept of sterochem.including optical rotation,fischer projections,newmann structures etc.  it was not available in your study material.

7 years ago


Answers : (1)


Dear student,

The SN2 reaction is a single-step displacement of a leaving group by a nucleophile. During the transition state, the bond to the nucleophile forms at the same time that the bond to the leaving group breaks. Therefore the nucleophile is required to approach from the back, and configuration at carbon is inverted.


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