The D-aldopentoses which can be reduced to optically inactive alditols using NaBH 4 , CH 3 OH is to be predicted. Concept introduction: Carbohydrates are naturally occurring compounds. Carbohydrates are polyhydroxy aldehydes or ketones . The monosaccharide with five carbon atoms and aldehyde group is known as D-aldopentoses. The monosaccharide in which the aldehyde or ketone group is replaced with alcohol group is known as alditols.

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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 28, Problem 28.56P

Interpretation Introduction

Interpretation: The D-aldopentoses which can be reduced to optically inactive alditols using NaBH4, CH3OH is to be predicted.

Concept introduction: Carbohydrates are naturally occurring compounds. Carbohydrates are polyhydroxy aldehydes or ketones. The monosaccharide with five carbon atoms and aldehyde group is known as D-aldopentoses. The monosaccharide in which the aldehyde or ketone group is replaced with alcohol group is known as alditols.

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Identify the sugar in description. An aldopentose that is not d-arabinose forms d-arabinitol when it is reduced with NaBH4.

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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 28, Problem 28.56P

Interpretation Introduction

Interpretation: The D-aldopentoses which can be reduced to optically inactive alditols using NaBH4, CH3OH is to be predicted.

Concept introduction: Carbohydrates are naturally occurring compounds. Carbohydrates are polyhydroxy aldehydes or ketones. The monosaccharide with five carbon atoms and aldehyde group is known as D-aldopentoses. The monosaccharide in which the aldehyde or ketone group is replaced with alcohol group is known as alditols.

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Check out a sample textbook solution

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Answer 3

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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 28, Problem 28.56P

Interpretation Introduction

Interpretation: The D-aldopentoses which can be reduced to optically inactive alditols using NaBH4, CH3OH is to be predicted.

Concept introduction: Carbohydrates are naturally occurring compounds. Carbohydrates are polyhydroxy aldehydes or ketones. The monosaccharide with five carbon atoms and aldehyde group is known as D-aldopentoses. The monosaccharide in which the aldehyde or ketone group is replaced with alcohol group is known as alditols.

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Check out a sample textbook solution

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Answer 4

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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 28, Problem 28.56P

Interpretation Introduction