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Formation of ε-caprolactam via catalytic Beckmann rearrangement using P2O5 in ionic liquids

✍ Scribed by Rex X Ren; Larisa D Zueva; Wei Ou

Publisher
Elsevier Science
Year
2001
Tongue
French
Weight
50 KB
Volume
42
Category
Article
ISSN
0040-4039

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✦ Synopsis

Catalytic Beckmann rearrangement of cyclohexanone oxime in ionic liquids using P 2 O 5 or Eaton's reagent has been investigated. 1-n-Butyl-3-methylimidazolium hexafluorophosphate (bmiPF 6 ) gives superior results to those noted by earlier workers.

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## Abstract magnified image A series of novel gemini dicationic acidic ionic liquids (GDAILs), compounds **1**–**3** carrying two SO~3~H groups at the cation moieties and having anions of the type CF~3~SO$\rm{ \_3^ - }$, were synthesized in good yields (__Scheme 1__). Some physicochemical properti