Suggest a sequence of reactions suitable for preparing each of the from the indicated starting material. You may use any necessary organic or inorganic reagents.
1,2−dibromopropane from 2−bromopropane
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Solution
Dhydrobromination of 2-bromopropane with alcoholic KOH gives propene. Reaction with bromine in carbon tetrachloride gives 1,2 dibromopropane.