Fischer projections for two D-aldoheptoses whose stereochemistry at C 3 , C 4 , C 5 and C 6 is the same as that of D-glucose at C 2 , C 3 , C 4 and C 5 are to be drawn. Concept introduction: When a new chiral center is created in an optically active monosaccharide molecule the arrangement of H and OH on the new chiral center can be either H at left and OH at right or H at right and OH at left. Hence two isomers can be written. To draw: Fischer projections for two D-aldoheptoses whose stereochemistry at C 3 , C 4 , C 5 and C 6 is the same as that of D-glucose at C 2 , C 3 , C 4 and C 5 .

Question

BeF2 exists as a linear molecule. Which kind of hybrid orbitals does Be use in this compound? Use Orbital Diagrams to show how the orbitals are formed. (6)

Answer 1

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 25.SE, Problem 43AP

Interpretation Introduction

Interpretation:

Fischer projections for two D-aldoheptoses whose stereochemistry at C₃, C₄, C₅ and C₆ is the same as that of D-glucose at C₂, C₃, C₄ and C₅ are to be drawn.

Concept introduction:

When a new chiral center is created in an optically active monosaccharide molecule the arrangement of H and OH on the new chiral center can be either H at left and OH at right or H at right and OH at left. Hence two isomers can be written.

To draw:

Fischer projections for two D-aldoheptoses whose stereochemistry at C₃, C₄, C₅ and C₆ is the same as that of D-glucose at C₂, C₃, C₄ and C₅.

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BeF2 exists as a linear molecule. Which kind of hybrid orbitals does Be use in this compound? Use Orbital Diagrams to show how the orbitals are formed. (6)

Please answer the questions and provide detailed explanations as well as a drawing to show the signals in the molecule.

Propose an efficient synthesis for the following transformation: EN The transformation above can be performed with some reagent or combination of the reagents listed below. Give the necessary reagents in the correct order, as a string of letters (without spaces or punctuation, such as "EBF"). If there is more than one correct solution, provide just one answer. A. t-BuOK B. Na2Cr2O7, H2SO4, H2O C. NBS, heat F. NaCN D. MeOH E. NaOH G. MeONa H. H2O I. 1) O3; 2) DMS

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 25.SE, Problem 43AP

Interpretation Introduction

Interpretation:

Fischer projections for two D-aldoheptoses whose stereochemistry at C₃, C₄, C₅ and C₆ is the same as that of D-glucose at C₂, C₃, C₄ and C₅ are to be drawn.

Concept introduction:

When a new chiral center is created in an optically active monosaccharide molecule the arrangement of H and OH on the new chiral center can be either H at left and OH at right or H at right and OH at left. Hence two isomers can be written.

To draw:

Fischer projections for two D-aldoheptoses whose stereochemistry at C₃, C₄, C₅ and C₆ is the same as that of D-glucose at C₂, C₃, C₄ and C₅.

Expert Solution & Answer

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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 25.SE, Problem 43AP

Interpretation Introduction

Interpretation:

Fischer projections for two D-aldoheptoses whose stereochemistry at C₃, C₄, C₅ and C₆ is the same as that of D-glucose at C₂, C₃, C₄ and C₅ are to be drawn.

Concept introduction:

When a new chiral center is created in an optically active monosaccharide molecule the arrangement of H and OH on the new chiral center can be either H at left and OH at right or H at right and OH at left. Hence two isomers can be written.

To draw:

Fischer projections for two D-aldoheptoses whose stereochemistry at C₃, C₄, C₅ and C₆ is the same as that of D-glucose at C₂, C₃, C₄ and C₅.

Expert Solution & Answer

Trending nowThis is a popular solution!

See solution

Check out sample textbook 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 25.SE, Problem 43AP

Interpretation Introduction