Which One of the Following Is the Correct Stereochemical Configuration

question 75

Multiple Choice

Which one of the following is the correct stereochemical configuration for D-mannose?

• A) 2S,3S,4R,5R
• B) 2R,3S,4R,5S
• C) 2R,3R,4S,5S
• D) 2S,3S,4R,5S
• E) 2S,3R,4S,5R

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Definitions:

(R)-Pentan-2-Ol

An optically active form of pentanol where the hydroxyl group is attached to the second carbon atom in the pentane chain.

NaI

Sodium iodide, a salt commonly used in organic chemistry as a source of iodide ions in substitution reactions.

TsCl

Tosyl chloride, a reagent used to convert alcohols into tosylates, making them better leaving groups for nucleophilic substitution reactions.

3-Methylbutan-2-Ol

3-Methylbutan-2-ol is an organic compound, a type of alcohol with the formula C5H12O, characterized by having the hydroxyl group (-OH) on the second carbon of a 5-carbon chain, with a methyl group on the third carbon.