Some isomeric products were isolated from the free-radical chlorination of (R)-sec-butyl chloride. a) Draw stereochemical structures of the 1,2-, 2,2, and 1,3- dichlorobutanes obtained in this way. Give the proper R/S specification of 1,2 and the 1,3-dichlorobutanes. b) Which of these fractions as isolated will be optically active?
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