Chemistry
Propranolol is synthesized in two ways from the same initial substance. The first way consists of reacting 1-naphthol with epichlorohydrin. Opening of the epoxide ring gives 1-chloro-3-(1-naphthyloxy)-2-propanol, which is reacted further with isopropylamine, giving propranolol. The second method uses the same reagents in the presence of a base and consists of initially making 3-(1-naphthyloxy)propylenoxide, the subsequent reaction with isopropylamine which results in epoxide ring opening leading to the formation of propranolol.
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