Question

Write a mechanism for the reaction of nitrobenzene and 1,4-Di-Tert-butylbenzene in Dimethyl sulfoxide ,KOH,Ethylene glycol.

Write a mechanism for the reaction of nitrobenzene and 1,4-Di-Tert-butylbenzene in Dimethyl sulfoxide ,KOH,Ethylene glycol.

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Answer #1

since the Pka value of ethylene glycol is 14.22 which is lesser than DMSO 35, KOH abstracts proton from ethylene glycol.

1,4-di-tert-butylbenzene will be acting as a solvent here.

the last step in the mechanism where it is shown multiple steps is that the proton abstraction from S-Me group and followed by cyclisation leads to product.

Hope you got it..!

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