Introduction to General, Organic and Biochemistry
Introduction to General, Organic and Biochemistry
12th Edition
ISBN: 9780357391594
Author: Frederick A. Bettelheim; William H. Brown; Mary K. Campbell
Publisher: Cengage Learning US
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Chapter 19, Problem 38P

(a)

Interpretation Introduction

Interpretation: The name of two monosaccharide units present in trehalose should be determined.

Concept Introduction: A sugar formed by joining two monosaccharides is said to be disaccharide.

(b)

Interpretation Introduction

Interpretation: The glycosidic bond should be mentioned in the trehalose.

Concept Introduction: A covalent bond that joins a group with a carbohydrate (sugar) is said to be a glycosidic bond or linkage.

(c)

Interpretation Introduction

Interpretation: Whether the trehalose is a reducing or non-reducing sugar should be determined.

Concept Introduction: On oxidation, the aldehyde group is converted to carboxylic acid group resulting in the formation of aldonic acids. Carbohydrates on reacting with mild oxidizing agent to form acid is said to be reducing sugar.

(d)

Interpretation Introduction

Interpretation: Whether trehalosewill undergo mutarotaion or not should be determined.

Concept Introduction: A change in the specific rotation of an optically active compound due to change in the equilibrium between two anomers, α and β is said to be mutarotation.

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SYNTHESIS REACTIONS. For the following reactions, synthesize the given products from the given reactants. Multiple reactions/steps will be needed. For the one of the steps (ie reactions) in each synthesis, write out the mechanism for that reaction and draw an energy diagram showing the correct number of hills and valleys for that step's mechanism. CI b. a. Use acetylene (ethyne) and any alkyl halide as your starting materials Br C. d. "OH OH III. OH

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Introduction to General, Organic and Biochemistry

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