Chapter 19: Q17P (page 1001)
Give the products expected from the following reactions:
(a) acetyl chloride + ethylamine
(b) benzoyl chloride +dimethylamine
(c) hexanoyl chloride + piperidine
Short Answer
(a)
(b)
(c)
Chapter 19: Q17P (page 1001)
Give the products expected from the following reactions:
(a) acetyl chloride + ethylamine
(b) benzoyl chloride +dimethylamine
(c) hexanoyl chloride + piperidine
(a)
(b)
(c)
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Get started for freeWe have considered nucleophilic aromatic substitution of pyridine at the 2-position and 3-position but not the at the 4-position. Complete the three possible cases by showing the mechanism for the reaction of methoxide ion with 4-chloropyridine. Show how the intermediate is stabilized by delocalization of the charge onto the nitrogen atom.
Show how the substituents containing the azo group () can facilitate both electrophilic and nucleophilic aromatic substitution.
A.Hafner and S.Brase, Angewandte Chemie Int. Ed., M.Heinrich et al., Journal of Organic Chemistry, 2012, 77, 1520. 2012, 51, 3713
Question. (a) Propose a mechanism for the reaction of 2-bromopyridine with sodium amide to give 2-aminopyridine.
(b) When 3-bromopyridine is used in this reaction, stronger reaction conditions are required and a mixture of 3-aminopyridine and 4-aminopyridine results. Propose a mechanism to explain this curious result.
Question. The carbon NMR chemical shifts of diethylmethylamine, piperidine, propan-1-ol, and propanal follow. Determine which spectrum corresponds to each structure, and show which carbon atom(s) are responsible for each absorption.
(a) 25.9, 27.8, 47.9
(b) 12.4, 41.0, 51.1
(c) 7.9, 44.7, 201.9
(d) 10.0, 25.8, 63.6
Propose a mechanism for the synthesis of methyl orange.
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