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Friday, January 24, 2020

Explain Exhaustive alkylation and Hoffmann Elimination.

Then reaction of amines with excess of alkyl halides to form a quaternary ammonium salt is known as exhaustive alkylation and if the alkyl group is methyl, then it is known as exhaustive methylation .
The exhaustive methylation of amine followed by treatment with moist silver oxide (AgO + O2--> AgOH) and subsequent heating to form alkene is known as Hoffmann elimination.

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What is Imine-Enamine tautomerism?

An imine is a compound that contains a -C=NH bond. It is homologous of -C=O. And Imime form is just similar to keto form and Enamine form is just similar to Enol form . The Imine-Enamine tautomerism is due to the migration of alpha hydrogen from one polyvalent atom to another to form Enamine thus Imines can be converted into enamines.

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Thursday, January 23, 2020

How to write Bechmann rearrangment mechanism involved formation of oxime of cyclohexane and transformation into cyclic amide caprolactam?

This reaction proceed through formation of of oxime cyclohexane by Nucleophilic Addition reaction and followed by Bechmann rearrangment to form desired product Caprolactam , the whole Mechanism given as.