The structures of different products formed from A to D are to be given. Concept Introduction: > The Grignard reagent or RMgX is a polar organometallic reagent that undergoes nucleophilic addition reaction with aldehydes and ketones. It contains organic group which is covalently bonded to magnesium atom, which is also bonded to halogen atom. > Grignard reagent or RMgX can be synthesized from haloalkanes by reacting them with magnesium in the presence of dry ether. > Conversion of a reactant into its derivative can be brought about by a sequence of reactions involving various reagents. > Ethylene glycol, in an acidic medium, forms cyclic acetal on reaction with aldehydes. > Grignard reagent or alkyl magnesium bromide can be formed by the treatment of alkyl bromide with magnesium in the presence of dry ether. > Reaction of alkyl magnesium bromide with aldehyde in an acidic medium forms a secondary alcohol. > If an alcoholic and a carbonyl group are present in the same compound, they can form hemiacetal by intramolecular cyclization in an acidic medium. Furthermore, hemiacetal on treatment with methanol, forms acetal.

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Chapter 16, Problem 39P

Interpretation Introduction

Interpretation:

The structures of different products formed from A to D are to be given.

Concept Introduction:
>
The Grignard reagent or RMgX is a polar organometallic reagent that undergoes nucleophilic addition reaction with aldehydes and ketones. It contains organic group which is covalently bonded to magnesium atom, which is also bonded to halogen atom.
>
Grignard reagent or RMgX can be synthesized from haloalkanes by reacting them with magnesium in the presence of dry ether.
>
Conversion of a reactant into its derivative can be brought about by a sequence of reactions involving various reagents.
>
Ethylene glycol, in an acidic medium, forms cyclic acetal on reaction with aldehydes.
>
Grignard reagent or alkyl magnesium bromide can be formed by the treatment of alkyl bromide with magnesium in the presence of dry ether.
>
Reaction of alkyl magnesium bromide with aldehyde in an acidic medium forms a secondary alcohol.
>
If an alcoholic and a carbonyl group are present in the same compound, they can form hemiacetal by intramolecular cyclization in an acidic medium. Furthermore, hemiacetal on treatment with methanol, forms acetal.

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