Questions from Organic Chemistry


Q: Draw a Haworth projection for each of the following compounds:

Draw a Haworth projection for each of the following compounds: a. β-D-Fructofuranose b. β-D-Galactopyranose c. β-D-Glucopyranose d. β-D-Mannopyranose

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Q: Draw a Haworth projection showing the α-pyranose form of the

Draw a Haworth projection showing the α-pyranose form of the D-aldohexose that is epimeric with D-glucose at C3.

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Q: Provide a complete name for each of the following compounds:

Provide a complete name for each of the following compounds:

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Q: Draw a reasonable mechanism for the following transformation: /

Draw a reasonable mechanism for the following transformation:

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Q: Draw the open-chain form of each of the compounds in

Draw the open-chain form of each of the compounds in the previous problem.

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Q: Draw the products that are expected when β-D-allopyranose

Draw the products that are expected when β-D-allopyranose is treated with each of the following reagents: a. Excess CH3I, Ag2O b. Excess acetic anhydride, pyridine c. CH3OH, HCl

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Q: When D-galactose is heated in the presence of nitric acid

When D-galactose is heated in the presence of nitric acid, an optically inactive compound is obtained. Draw the structure of the product and explain why it is optically inactive.

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Q: In addition to D-galactose, one other D-aldohexose

In addition to D-galactose, one other D-aldohexose also forms an optically inactive aldaric acid when treated with nitric acid. Draw the structure of this aldohexose.

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Q: Draw the more stable chair conformation of α-D-altropyranose

Draw the more stable chair conformation of α-D-altropyranose and label all substituents as axial or equatorial.

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Q: Draw the products that are expected when α-D-galactopyranose

Draw the products that are expected when α-D-galactopyranose is treated with excess methyl iodide in the presence of silver oxide, followed by aqueous acid.

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