The structures of D –- psicose and D –- tagatose are to be shown. Concept Introduction: ▸ Monosaccharides, fructose, sorbose, psicose and tagatose are ketohexoses. Monosaccharides allose and galactose are aldohexoses. All of them are reducing sugars. ▸ Compounds formed by the reaction of reducing sugars with excess of phenylhydrazine are called osazones . Osazones are products of oxidation and are produced by all of the reducing sugars. ▸ The Fischer projection is a way of representing biomolecules with cross formulation of the open chain structures of D − Glucose .

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Answer 1

Question

Chapter 22, Problem 26P

Interpretation Introduction

Interpretation:

The structures of D –- psicose and D –- tagatose are to be shown.

Concept Introduction:

▸ Monosaccharides, fructose, sorbose, psicose and tagatose are ketohexoses. Monosaccharides allose and galactose are aldohexoses. All of them are reducing sugars.

▸ Compounds formed by the reaction of reducing sugars with excess of phenylhydrazine are called osazones. Osazones are products of oxidation and are produced by all of the reducing sugars.

▸ The Fischer projection is a way of representing biomolecules with cross formulation of the open chain structures of D−Glucose.

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4. Provide a clear arrow-pushing mechanism for each of the following reactions. Do not skip proton transfers, do not combine steps, and make sure your arrows are clear enough to be interpreted without ambiguity. a. 2. 1. LDA 3. H3O+ HO

b. H3C CH3 H3O+ ✓ H OH

2. Provide reagents/conditions to accomplish the following syntheses. More than one step is required in some cases. a. CH3

Answer 2

Question

Chapter 22, Problem 26P

Interpretation Introduction

Interpretation:

The structures of D –- psicose and D –- tagatose are to be shown.

Concept Introduction:

▸ Monosaccharides, fructose, sorbose, psicose and tagatose are ketohexoses. Monosaccharides allose and galactose are aldohexoses. All of them are reducing sugars.

▸ Compounds formed by the reaction of reducing sugars with excess of phenylhydrazine are called osazones. Osazones are products of oxidation and are produced by all of the reducing sugars.

▸ The Fischer projection is a way of representing biomolecules with cross formulation of the open chain structures of D−Glucose.

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Answer 3

Question

Chapter 22, Problem 26P

Interpretation Introduction

Interpretation:

The structures of D –- psicose and D –- tagatose are to be shown.

Concept Introduction:

▸ Monosaccharides, fructose, sorbose, psicose and tagatose are ketohexoses. Monosaccharides allose and galactose are aldohexoses. All of them are reducing sugars.

▸ Compounds formed by the reaction of reducing sugars with excess of phenylhydrazine are called osazones. Osazones are products of oxidation and are produced by all of the reducing sugars.

▸ The Fischer projection is a way of representing biomolecules with cross formulation of the open chain structures of D−Glucose.

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Answer 4

Question

Chapter 22, Problem 26P

Interpretation Introduction

Interpretation:

The structures of D –- psicose and D –- tagatose are to be shown.

Concept Introduction:

▸ Monosaccharides, fructose, sorbose, psicose and tagatose are ketohexoses. Monosaccharides allose and galactose are aldohexoses. All of them are reducing sugars.

▸ Compounds formed by the reaction of reducing sugars with excess of phenylhydrazine are called osazones. Osazones are products of oxidation and are produced by all of the reducing sugars.

▸ The Fischer projection is a way of representing biomolecules with cross formulation of the open chain structures of D−Glucose.

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Answer 5

Chapter 22, Problem 26P

Interpretation Introduction

Interpretation:

The structures of D –- psicose and D –- tagatose are to be shown.

Concept Introduction:

▸ Monosaccharides, fructose, sorbose, psicose and tagatose are ketohexoses. Monosaccharides allose and galactose are aldohexoses. All of them are reducing sugars.

▸ Compounds formed by the reaction of reducing sugars with excess of phenylhydrazine are called osazones. Osazones are products of oxidation and are produced by all of the reducing sugars.

▸ The Fischer projection is a way of representing biomolecules with cross formulation of the open chain structures of D−Glucose.

Answer 6

Chapter 22, Problem 26P

Interpretation Introduction

Interpretation:

The structures of D –- psicose and D –- tagatose are to be shown.

Concept Introduction:

▸ Monosaccharides, fructose, sorbose, psicose and tagatose are ketohexoses. Monosaccharides allose and galactose are aldohexoses. All of them are reducing sugars.

▸ Compounds formed by the reaction of reducing sugars with excess of phenylhydrazine are called osazones. Osazones are products of oxidation and are produced by all of the reducing sugars.

▸ The Fischer projection is a way of representing biomolecules with cross formulation of the open chain structures of D−Glucose.

Answer 7

Chapter 22, Problem 26P

Interpretation Introduction

Interpretation:

The structures of D –- psicose and D –- tagatose are to be shown.

Concept Introduction:

▸ Monosaccharides, fructose, sorbose, psicose and tagatose are ketohexoses. Monosaccharides allose and galactose are aldohexoses. All of them are reducing sugars.

▸ Compounds formed by the reaction of reducing sugars with excess of phenylhydrazine are called osazones. Osazones are products of oxidation and are produced by all of the reducing sugars.

▸ The Fischer projection is a way of representing biomolecules with cross formulation of the open chain structures of D−Glucose.

Answer 8

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Answer 9

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Answer 10

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Answer 11

Ch. 22 - Prob. 1PP Ch. 22 - Prob. 2PP Ch. 22 - Prob. 3PP Ch. 22 - Prob. 4PP Ch. 22 - Prob. 5PP Ch. 22 - Prob. 6PP Ch. 22 - Prob. 7PP Ch. 22 - Prob. 8PP Ch. 22 - Practice Problem 22.9 What products would you...Ch. 22 - Prob. 10PP

Solution Summary: The author explains the structure of D-psicose and D –- tagatos.

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Chapter 22 Solutions