The structural formula for the compound D and for the product, C 9 H 14 O formed in the given reaction sequence has to be given. Concept introduction: The functional group in the aldehydes and Ketones are carbonyl group. Wittig reaction is a reaction in which a nucleophilic elimination occurs after nucleophilic addition reaction. In this reaction an aldehyde or ketone reacts with a triphenyl phosphonium ylide (Wittig reagent) to give an alkene and triphenylphosphine oxide. The reaction can be represented as shown below, Mechanism: It is possible to generate sulphur ylides in a manner similar to that used to produce phosphonium ylides. For example, treating a sulfonium salt with a strong base gives the sulphur ylide. Sulfur ylides reacts with ketone to give epoxide .

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Chapter 16, Problem 16.28P

Interpretation Introduction

Interpretation:

The structural formula for the compound D and for the product, C9H14O formed in the given reaction sequence has to be given.

Concept introduction:

The functional group in the aldehydes and Ketones are carbonyl group.

Wittig reaction is a reaction in which a nucleophilic elimination occurs after nucleophilic addition reaction. In this reaction an aldehyde or ketone reacts with a triphenyl phosphonium ylide (Wittig reagent) to give an alkene and triphenylphosphine oxide.

The reaction can be represented as shown below,

Mechanism:

It is possible to generate sulphur ylides in a manner similar to that used to produce phosphonium ylides. For example, treating a sulfonium salt with a strong base gives the sulphur ylide.

Sulfur ylides reacts with ketone to give epoxide.

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