NGP By Heteroatom Lone Pairs
A classic example of NGP is the reaction of a sulfur or nitrogen mustard with a nucleophile, the rate of reaction is much higher for the sulfur mustard and a nucleophile than it would be for a primary alkyl chloride without a heteroatom.
In sugar chemistry anchimeric assistance is an example of NGP.
Read more about this topic: Neighbouring Group Participation
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