The possible number of ketopentoses is to be determined, and their Fischer projections are to be drawn. Concept introduction: A ketopentose is a carbohydrate with a five carbon chain and a ketone functional group at C2. Fischer projection is used to represent the stereochemistry in chiral molecules, particularly carbohydrates. Fischer projection of a carbohydrate is drawn with the carbon chain vertical, and the lowest numbered carbon at the top. In case of aldoses, this means the aldehyde group, at C1 is at the top. For ketoses, the keto group is at C2, with C1 at the top. The non-terminal groups are shown on horizontal bonds. The horizontal bonds in the projection are oriented toward the observer, and the vertical bonds oriented away from the observer.

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Answer 1

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Definition Definition Organic compounds that have a carbonyl group, C=O, as their functional group. The carbonyl group in aldehydes is placed at the end of the molecular structure, which means the C=O is attached to one hydrogen atom and an alkyl group or a benzene ring. Just like all the other homologous series in organic chemistry, the naming of aldehydes uses the suffix “-al”. The general molecular formula is C n H 2n O.

Chapter 24, Problem 31P

Interpretation Introduction

Interpretation:

The possible number of ketopentoses is to be determined, and their Fischer projections are to be drawn.

Concept introduction:

A ketopentose is a carbohydrate with a five carbon chain and a ketone functional group at C2.

Fischer projection is used to represent the stereochemistry in chiral molecules, particularly carbohydrates.

Fischer projection of a carbohydrate is drawn with the carbon chain vertical, and the lowest numbered carbon at the top. In case of aldoses, this means the aldehyde group, at C1 is at the top. For ketoses, the keto group is at C2, with C1 at the top.

The non-terminal groups are shown on horizontal bonds.

The horizontal bonds in the projection are oriented toward the observer, and the vertical bonds oriented away from the observer.

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Answer 2

Question

Definition Definition Organic compounds that have a carbonyl group, C=O, as their functional group. The carbonyl group in aldehydes is placed at the end of the molecular structure, which means the C=O is attached to one hydrogen atom and an alkyl group or a benzene ring. Just like all the other homologous series in organic chemistry, the naming of aldehydes uses the suffix “-al”. The general molecular formula is C n H 2n O.

Chapter 24, Problem 31P

Interpretation Introduction

Interpretation:

The possible number of ketopentoses is to be determined, and their Fischer projections are to be drawn.

Concept introduction:

A ketopentose is a carbohydrate with a five carbon chain and a ketone functional group at C2.

Fischer projection is used to represent the stereochemistry in chiral molecules, particularly carbohydrates.

Fischer projection of a carbohydrate is drawn with the carbon chain vertical, and the lowest numbered carbon at the top. In case of aldoses, this means the aldehyde group, at C1 is at the top. For ketoses, the keto group is at C2, with C1 at the top.

The non-terminal groups are shown on horizontal bonds.

The horizontal bonds in the projection are oriented toward the observer, and the vertical bonds oriented away from the observer.

Expert Solution & Answer

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Check out a sample textbook solution

See solution

Answer 3

Question

Definition Definition Organic compounds that have a carbonyl group, C=O, as their functional group. The carbonyl group in aldehydes is placed at the end of the molecular structure, which means the C=O is attached to one hydrogen atom and an alkyl group or a benzene ring. Just like all the other homologous series in organic chemistry, the naming of aldehydes uses the suffix “-al”. The general molecular formula is C n H 2n O.

Chapter 24, Problem 31P

Interpretation Introduction

Interpretation:

The possible number of ketopentoses is to be determined, and their Fischer projections are to be drawn.

Concept introduction:

A ketopentose is a carbohydrate with a five carbon chain and a ketone functional group at C2.

Fischer projection is used to represent the stereochemistry in chiral molecules, particularly carbohydrates.

Fischer projection of a carbohydrate is drawn with the carbon chain vertical, and the lowest numbered carbon at the top. In case of aldoses, this means the aldehyde group, at C1 is at the top. For ketoses, the keto group is at C2, with C1 at the top.

The non-terminal groups are shown on horizontal bonds.

The horizontal bonds in the projection are oriented toward the observer, and the vertical bonds oriented away from the observer.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 4

Question

Definition Definition Organic compounds that have a carbonyl group, C=O, as their functional group. The carbonyl group in aldehydes is placed at the end of the molecular structure, which means the C=O is attached to one hydrogen atom and an alkyl group or a benzene ring. Just like all the other homologous series in organic chemistry, the naming of aldehydes uses the suffix “-al”. The general molecular formula is C n H 2n O.

Chapter 24, Problem 31P

Interpretation Introduction