Me Me Me Cl CI CI (A) (B) Diazepam Cl- Me CI 4-Chloro-N-methylaniline Benzoyl chloride

Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Diazepam, better known as Valium, is a central nervous system (CNS) sedative/ hypnotic. As a sedative, it diminishes activity and excitement and thereby has a calming effect. Back in 1976, based on the number of new and refilled prescriptions processed,
diazepam was the most prescribed drug in the United States. Following is a retrosynthetic analysis for a synthesis of diazepam. Note that the formation of compound B involves a Friedel-Crafts acylation. In this reaction, it is necessary to protect the 2° amine by prior treatment with acetic anhydride. The acetyl-protecting group is then removed by treatment with aqueous NaOH followed by careful acidification with HCl.

Q. Is diazepam chiral? If so, how many of the possible stereoisomers are formed in this synthesis?

Me
Me
Me
Cl
CI
CI
(A)
(B)
Diazepam
Cl-
Me
CI
4-Chloro-N-methylaniline
Benzoyl chloride
Transcribed Image Text:Me Me Me Cl CI CI (A) (B) Diazepam Cl- Me CI 4-Chloro-N-methylaniline Benzoyl chloride
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