Caprolactam, the monomer from which nylon 6 is synthesized, is prepared from cyclo- hexanone in two steps. In Step 1, cyclohexanone is treated with hydroxylamine to form cyclohexanone oxime. Treatment of the oxime with concentrated sulfuric acid in Step 2 gives caprolactam by a reaction called a Beckmann rearrangement. Propose a mecha- nism for the conversion of cyclohexanone oxime to caprolactam. HO NH NH,OH H,SO, Cyclohexanone Cyclohexanone Сaprolactam oxime

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
Chapter29: Organic Polymer Chemistry
Section: Chapter Questions
Problem 29.15P
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Caprolactam, the monomer from which nylon 6 is synthesized, is prepared from cyclo-
hexanone in two steps. In Step 1, cyclohexanone is treated with hydroxylamine to form
cyclohexanone oxime. Treatment of the oxime with concentrated sulfuric acid in Step 2
gives caprolactam by a reaction called a Beckmann rearrangement. Propose a mecha-
nism for the conversion of cyclohexanone oxime to caprolactam.
HO
NH
NH,OH
H,SO,
Cyclohexanone
Cyclohexanone
Сaprolactam
oxime
Transcribed Image Text:Caprolactam, the monomer from which nylon 6 is synthesized, is prepared from cyclo- hexanone in two steps. In Step 1, cyclohexanone is treated with hydroxylamine to form cyclohexanone oxime. Treatment of the oxime with concentrated sulfuric acid in Step 2 gives caprolactam by a reaction called a Beckmann rearrangement. Propose a mecha- nism for the conversion of cyclohexanone oxime to caprolactam. HO NH NH,OH H,SO, Cyclohexanone Cyclohexanone Сaprolactam oxime
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