Effect of removal of solvent at temperatures below their normal points with help of rotary evaporator should be determined. Concept introduction: Rotary evaporator is laboratory apparatus that is used to remove solvents with help of reduced pressure. This is designed in such way that allows fast evaporation of solvents. A variable-speed motor is used for rotation of flask that has solvent to be evaporated.

Question

b) Certain cyclic compounds are known to be conformationally similar to carbohydrates, although they are not themselves carbohydrates. One example is Compound C shown below, which could be imagined as adopting four possible conformations. In reality, however, only one of these is particularly stable. Circle the conformation you expect to be the most stable, and provide an explanation to justify your choice. For your explanation to be both convincing and correct, it must contain not only words, but also "cartoon" orbital drawings contrasting the four structures. Compound C Possible conformations (circle one): Дет

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Question

Chapter 4.2, Problem 9E

a)

Interpretation Introduction

Interpretation: Effect of removal of solvent at temperatures below their normal points with help of rotary evaporator should be determined.

Concept introduction: Rotary evaporator is laboratory apparatus that is used to remove solvents with help of reduced pressure. This is designed in such way that allows fast evaporation of solvents. A variable-speed motor is used for rotation of flask that has solvent to be evaporated.

b)

Interpretation Introduction

Interpretation: Preference of rotary evaporation distillation over simple distillation should be determined.

Concept introduction: Rotary evaporator is laboratory apparatus that is used to remove solvents with help of reduced pressure. This is designed in such way that allows fast evaporation of solvents. A variable-speed motor is used for rotation of flask that has solvent to be evaporated.

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b) Certain cyclic compounds are known to be conformationally similar to carbohydrates, although they are not themselves carbohydrates. One example is Compound C shown below, which could be imagined as adopting four possible conformations. In reality, however, only one of these is particularly stable. Circle the conformation you expect to be the most stable, and provide an explanation to justify your choice. For your explanation to be both convincing and correct, it must contain not only words, but also "cartoon" orbital drawings contrasting the four structures. Compound C Possible conformations (circle one): Дет

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