Chemistry, asked by Kalden8928, 10 months ago

Explain the mechanism of nucleophilic substitution reaction sn1,sn2 and snAr

Answers

Answered by Anonymous
1

Explanation:

nucleophilic aromatic substitution is a substitution reaction in organic chemistry in which the nucleophile displaces a good leaving group, such as a halide, on an aromatic ring. There are 6 nucleophilic substitution mechanisms encountered with aromatic systems:

the SNAr (addition-elimination) mechanism

SNAr mechanism

the aromatic SN1 mechanism encountered with diazonium salts

Aromatic SN1mechanism

the benzyne mechanism (E1cb-AdN)

Substitution via benzyne

the free radical SRN1 mechanism

the ANRORC mechanism

Vicarious nucleophilic substitution.

The most important of these is the SNAr mechanism, where electron withdrawing groups activate the ring towards nucleophilic attack, for example if there are nitro functional groups positioned ortho or para to the halide leaving group

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