A finding that opened a route to B-blockers was the discovery that B-blocking activ- ity is retained if an oxygen atom is interposed between the aromatic ring and the side chain. To see this difference, compare the structures of labetalol propranolol. Thus, alkylation of phenoxide ions can be used as a way to introduce this side chain. The first of this new class of drugs was propranolol. and OH ОН 1-Napthol (B-Naphthol) Propranolol
A finding that opened a route to B-blockers was the discovery that B-blocking activ- ity is retained if an oxygen atom is interposed between the aromatic ring and the side chain. To see this difference, compare the structures of labetalol propranolol. Thus, alkylation of phenoxide ions can be used as a way to introduce this side chain. The first of this new class of drugs was propranolol. and OH ОН 1-Napthol (B-Naphthol) Propranolol
Organic Chemistry
8th Edition
ISBN:9781305580350
Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote
Publisher:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote
Chapter21: Benzene And The Concept Of Aromaticity
Section: Chapter Questions
Problem 21.58P
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Question
Show how propanolol can be synthesized from 1-naphthol, epichlorohydrin
, and isopropylamine.
Expert Solution
Step 1
- When isopropylamine is treated with epichlorohydrin an amino compound with an epoxide ring is formed.
- 1-napthol is treated with the epoxide. It gives a protonated alcohol.
- By the transfer of proton we get the final product.
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