Questions from Organic Chemistry

Q: Identify the reagents you would use to convert D-erythrose (

Identify the reagents you would use to convert D-erythrose (Problem 24.22) into D-ribose. What other product is also formed in this process?

Q: 74. In the following compound, how many of the π

74. In the following compound, how many of the π bonds are conjugated? a. 0 b. 1 c. 2 d. 3 75. Which set of starting materials could be used to prepare the following compound in one st...

Q: Draw and name the two aldohexoses that can be converted into D

Draw and name the two aldohexoses that can be converted into D-ribose (Problem 24.34a) using a Wohl degradation.

Q: Identify the reagents you would use to convert D-ribose into

Identify the reagents you would use to convert D-ribose into D-erythrose (Problem 24.22).

Q: When D-glucose undergoes a Wohl degradation followed by a Kiliani

When D-glucose undergoes a Wohl degradation followed by a Kiliani–Fischer chain-lengthening process, a mixture of two epimeric products is obtained. Identify both epimers.

Q: Determine whether each of the following disaccharides is a reducing sugar:

Determine whether each of the following disaccharides is a reducing sugar:

Q: Draw the structure of the product obtained when the following disaccharide is

Draw the structure of the product obtained when the following disaccharide is treated with NaBH4 in methanol:

Q: Predict the product that is obtained when cellobiose is treated with each

Predict the product that is obtained when cellobiose is treated with each of the following reagents: a. NaBH4, H2O b. Br2, H2O (pH=6) c. CH3OH, HCl d. Ac2O, pyridine

Q: Classify each of the following monosaccharides as either D or L,

Classify each of the following monosaccharides as either D or L, as either an aldo or a keto sugar, and as a tetrose, pentose, or hexose:

Q: Identify each of the following structures as either D- or L

Identify each of the following structures as either D- or L-glyceraldehyde: