Question

What do you mean by NGP write a note on it

Answer 1

Answer:

NORDIA GEOGRAPHICAL PUBLICATIONS (NGP) is a non-profit, peer-reviewed scientific journal published by the Geographical Society of Northern Finland and the Geography Research Unit of the University of Oulu. The scope of the journal covers empirical and theoretical interventions from any branch of geography......

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Answer 2

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➠Neighbouring group participation (NGP) (also known as anchimeric assistance) in organic chemistry has been defined by IUPAC as the interaction of a reaction centre with a lone pair of electrons in an atom or the electrons present in a sigma bond or pi bond contained within the parent molecule but not conjugated with the reaction centre.[1] When NGP is in operation it is normal for the reaction rate to be increased. It is also possible for the stereochemistry of the reaction to be abnormal (or unexpected) when compared with a normal reaction. While it is possible for neighbouring groups to influence many reactions in organic chemistry (e.g. the reaction of a diene such as 1,3-cyclohexadiene with maleic anhydride normally gives the endo isomer because of a secondary effect {overlap of the carbonyl group π orbitals with the transition state in the Diels-Alder reaction}) this page is limited to neighbouring group effects seen with carbocations and SN2 reactions.