Chapter 12, Problem 46PP

(a)

Interpretation Introduction

Interpretation: The reagent used in the given reaction is to be identified.

Concept introduction: Sodium dichromate ${\text{(Na}}_{\text{2}}{\text{Cr}}_{\text{2}}{\text{O}}_{\text{7}})$ is used to oxidize secondary alcohols to ketones. It is a very strong oxidant.

(b)

Interpretation Introduction

Interpretation: The reagent used in the given reaction is to be identified.

Concept introduction: $\text{PCC}$ oxidizes ${\text{1}}^{°}$ alcohols into aldehydes and secondary alcohols into ketones. $\text{PCC}$ does not convert aldehydes into carboxylic acids, in contrast to chromic acid.

(c)

Interpretation Introduction

Interpretation: The reagent used in the given reaction is to be identified.

Concept introduction: $\text{PCC}$ oxidizes ${\text{1}}^{°}$ alcohols into aldehydes and secondary alcohols into ketones. $\text{PCC}$ does not convert aldehydes into carboxylic acids, in contrast to chromic acid.

(d)

Interpretation Introduction

Interpretation: The reagent used in the given reaction is to be identified.

Concept introduction: Sodium dichromate ${\text{(Na}}_{\text{2}}{\text{Cr}}_{\text{2}}{\text{O}}_{\text{7}})$ is a chromic acid reagent, used to oxidize secondary alcohols to ketones. It is a very strong oxidant.

(e)

Interpretation Introduction

Interpretation: The reagent used in the given reaction is to be identified.

Concept introduction: With the aid of reagents like sodium borohydride or lithium aluminum hydride, aldehydes and ketones can undergo a reduction process to produce either primary alcohol or secondary alcohol.

(f)

Interpretation Introduction

Interpretation: The reagent used in the given reaction is to be identified.

Concept introduction:

With the aid of reagents like sodium borohydride or lithium aluminum hydride, aldehydes and ketones can undergo a reduction process to produce either primary alcohol or secondary alcohol.