When (R) -butan-2-ol is treated with TsCl in pyridine, the product formed is ________.

A) a single enantiomer
B) a racemic mixture
C) a mixture of diastereomers
D) an achial compound
E) none of the above

TsCl

Tosyl chloride, a chemical reagent used to make alcohols more reactive by converting them into tosylates.

(R)-Butan-2-Ol

A specific enantiomer of butan-2-ol, which is a four-carbon alcohol with the hydroxyl group (-OH) located on the second carbon; the (R) configuration indicates its specific stereochemistry based on the Cahn-Ingold-Prelog priority rules.

Pyridine

A basic heterocyclic organic compound with the chemical formula C5H5N, used as a precursor to agrochemicals and pharmaceuticals, and as a solvent.