Chapter 19.10, Problem 38CC

(a)

Interpretation Introduction

Interpretation: Reagents used for the preparation for the given compound by Wittig reaction has to be identified.

Concept introduction:

Wittig Reaction: It is an organic reaction where an aldehyde or a ketone gets converted to an alkene by replacing carbonyl group by a $C=C$ bond. A phosphorous ylide (Wittig reagent) is used for this conversion. It is a neutral molecule where a positively charged phosphorous is attached to a negatively charged

  

Wittig Reagent: An alkyl halide reacts with $PP{h}_3$ in presence of $BuLi$ to form the Wittig reagent. This is a $S_{N}2$ reaction and primary alkyl halides are more reactive than secondary alkyl halide towards $S_{N}2$ reaction

(b)

Interpretation Introduction

Interpretation: Reagents used for the preparation for the given compound by Wittig reaction has to be identified.

Concept introduction:

Wittig Reaction: It is an organic reaction where an aldehyde or a ketone gets converted to an alkene by replacing carbonyl group by a $C=C$ bond. A phosphorous ylide (Wittig reagent) is used for this conversion. It is a neutral molecule where a positively charged phosphorous is attached to a negatively charged

  

Wittig Reagent: An alkyl halide reacts with $PP{h}_3$ in presence of $BuLi$ to form the Wittig reagent. This is a $S_{N}2$ reaction and primary alkyl halides are more reactive than secondary alkyl halide towards $S_{N}2$ reaction

(c)

Interpretation Introduction

Interpretation: Reagents used for the preparation for the given compound by Wittig reaction has to be identified.

Concept introduction:

Wittig Reaction: It is an organic reaction where an aldehyde or a ketone gets converted to an alkene by replacing carbonyl group by a $C=C$ bond. A phosphorous ylide (Wittig reagent) is used for this conversion. It is a neutral molecule where a positively charged phosphorous is attached to a negatively charged