Two sets of reagents that might be combined in a Wittig reaction to give 1-Phenyl-1,3-pentadiene has to be suggested. Concept introduction: The functional group in the aldehydes and Ketones are carbonyl group. An Alkene containing a halogen group in the allylic position is called as Allylic halides. Allylic position is the position next to C=C bond. Compounds with two double bonds are known as dienes. 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:

Question

19. (3 pts) in Chapter 7 we will see a reaction of halocyclohexanes that requires that the halogen occupy an axial position with this in mind, would you expect cis-1-bromo-3-methylcyclohexane or trans-1-bromo-3-methylcyclohexane to be more reactive in this reaction? Briefly explain your choice using structures to support your answer. Mere-eries-cecleone) The tran-i-browse-3-methylcyclohexione

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Question

Chapter 16, Problem 16.25P

Interpretation Introduction

Interpretation:

Two sets of reagents that might be combined in a Wittig reaction to give 1-Phenyl-1,3-pentadiene has to be suggested.

Concept introduction:

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

An Alkene containing a halogen group in the allylic position is called as Allylic halides. Allylic position is the position next to C=C bond.

Compounds with two double bonds are known as dienes.

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:

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