Open chain for the given carbohydrate that undergo acid-catalyzed cyclization to form α-D-fructopyranose should be drawn. Concept introduction: Hemiacetal are formed for the compound having both hydroxyl group and aldehyde group in acidic condition. The –OH group of compound attacks the carbonyl group of the same compound, thereby a ring is formed by the carbon atoms and oxygen atom of –OH group with incorporating into the ring. Acid catalyzed reaction are followed by the deprotonation of Hydronium ion to water molecule and then protonation of this water molecule will return to Hydronium ion will take place. Pyranose: A six-member cyclic form of a monosaccharide is called as pyronose.

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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 24.5, Problem 22CC

Interpretation Introduction

Interpretation:

Open chain for the given carbohydrate that undergo acid-catalyzed cyclization to form α-D-fructopyranose should be drawn.

Concept introduction:

Hemiacetal are formed for the compound having both hydroxyl group and aldehyde group in acidic condition.

The –OH group of compound attacks the carbonyl group of the same compound, thereby a ring is formed by the carbon atoms and oxygen atom of –OH group with incorporating into the ring.

Acid catalyzed reaction are followed by the deprotonation of Hydronium ion to water molecule and then protonation of this water molecule will return to Hydronium ion will take place.

Pyranose: A six-member cyclic form of a monosaccharide is called as pyronose.

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Problem 3-42 Consider 2-methylbutane (isopentane). Sighting along the C2-C3 bond: (a) Draw a Newman projection of the most stable conformation. (b) Draw a Newman projection of the least stable conformation. Problem 3-44 Construct a qualitative potential-energy diagram for rotation about the C-C bond of 1,2-dibromoethane. Which conformation would you expect to be most stable? Label the anti and gauche conformations of 1,2- dibromoethane. Problem 3-45 Which conformation of 1,2-dibromoethane (Problem 3-44) would you expect to have the largest dipole moment? The observed dipole moment of 1,2-dibromoethane is µ = 1.0 D. What does this tell you about the actual conformation of the molecule?

Answer 2

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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 24.5, Problem 22CC

Interpretation Introduction

Interpretation:

Open chain for the given carbohydrate that undergo acid-catalyzed cyclization to form α-D-fructopyranose should be drawn.

Concept introduction:

Hemiacetal are formed for the compound having both hydroxyl group and aldehyde group in acidic condition.

The –OH group of compound attacks the carbonyl group of the same compound, thereby a ring is formed by the carbon atoms and oxygen atom of –OH group with incorporating into the ring.

Acid catalyzed reaction are followed by the deprotonation of Hydronium ion to water molecule and then protonation of this water molecule will return to Hydronium ion will take place.

Pyranose: A six-member cyclic form of a monosaccharide is called as pyronose.

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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 24.5, Problem 22CC

Interpretation Introduction

Interpretation:

Open chain for the given carbohydrate that undergo acid-catalyzed cyclization to form α-D-fructopyranose should be drawn.

Concept introduction:

Hemiacetal are formed for the compound having both hydroxyl group and aldehyde group in acidic condition.

The –OH group of compound attacks the carbonyl group of the same compound, thereby a ring is formed by the carbon atoms and oxygen atom of –OH group with incorporating into the ring.

Acid catalyzed reaction are followed by the deprotonation of Hydronium ion to water molecule and then protonation of this water molecule will return to Hydronium ion will take place.

Pyranose: A six-member cyclic form of a monosaccharide is called as pyronose.

Expert Solution & Answer

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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 24.5, Problem 22CC

Interpretation Introduction