Conversion of ketoximes into lactams in organic sulfoxide solven

Details Conversion of ketoximes into lactams in organic sulfoxide solven Conversion of ketoximes into lactams in organic sulfoxide solven

1973-11-07

1976-03-16

Randolph, John D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260239A, 26029386, 2603265FN, C07D20104

Patent

active

039445429

ABSTRACT:
Organic sulfoxides such as dimethylsulfoxide are used in the transformation of alicyclic ketoximes into the corresponding lactams according to the Beckmann rearrangement in the presence of a strong acid cation exchange resin as disclosed. Thus cyclohexanone is dissolved in DMSO and contacted with a sulfonated copolymer of styrene and divinyl benzene to produce caprolactam in a continuous process.

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