Chapter 28: Question 28.17 (page 1124)

What glycosides are formed when each monosaccharide is treated with ${CH}_{3} {CH}_{2} OH$ , HCl:
(a) $β - D - Mannose$ ; (b) $α - D - glucose$ ; (c) $β - D - fructose$ ?

Short Answer

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Answer

(a.)and

(b.)and

(c.)and

Step by step solution

Glycosides

‘Glycosides’ are the acetals in organic chemistry having an alkoxy (OR) group attached to the anomeric carbon (C1). These are assigned by $α$ and $β$ labelsand are generated when a monosaccharide is treated with alcohol and HCl.

Reaction of β-D-mannose and α-D-glucose with CH3CH2OH and HCl.

a. When $β - D - mannose$ is treated with ${CH}_{3} {CH}_{2} OH$ (ethanol) and HCl, it results in the formation of two glycosides shown below:

$β - D - mannose$ on treatment with ethanol and HCl

b. When $α - D - glucose$ is treated with (ethanol) and HCl, it results in the formation of two glycosides shown below:

$α - D - glucose$ on treatment with ethanol and HCl

When β-D-fructose is treated with CH3CH2OH and HCl.

c. When $β - D - fructose$ is treated with ${CH}_{3} {CH}_{2} OH$ (ethanol) and HCl, it results in the formation of two glycosides shown below:

$β - D - fructose$ on treatment with ethanol and HCl

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What glycosides are formed when each monosaccharide is treated with ${CH}_{3} {CH}_{2} OH$ , HCl:
(a) $β - D - Mannose$ ; (b) $α - D - glucose$ ; (c) $β - D - fructose$ ?

Short Answer

Step by step solution

Glycosides

Reaction of β-D-mannose and α-D-glucose with CH3CH2OH and HCl.

When β-D-fructose is treated with CH3CH2OH and HCl.

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What glycosides are formed when each monosaccharide is treated with CH3CH2OH, HCl:(a) β-D-Mannose; (b)α-D-glucose ; (c) β-D-fructose ?

Short Answer

Step by step solution

Glycosides

Reaction of β-D-mannose and α-D-glucose with CH3CH2OH and HCl.

When β-D-fructose is treated with CH3CH2OH and HCl.

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Chemistry Textbooks

Inorganic Chemistry

The Earths Atmosphere

Chemistry Branches

Nuclear Chemistry

Kinetics

Making Measurements

Study anywhere. Anytime. Across all devices.

What glycosides are formed when each monosaccharide is treated with ${CH}_{3} {CH}_{2} OH$ , HCl:
(a) $β - D - Mannose$ ; (b) $α - D - glucose$ ; (c) $β - D - fructose$ ?