Process for preparing a lactam

Details Process for preparing a lactam Process for preparing a lactam

1994-08-19

1996-11-05

Tsang, Cecilia

Organic compounds -- part of the class 532-570 series

Organic compounds

Unsubstituted hydrocarbyl chain between the ring and the -c-...

540200, 540464, 546243, 548552, C07D20102, C07D20104

Patent

active

055719139

ABSTRACT:
The invention relates to a process for preparing a lactam from an alicyclic ketoxime in the presence of a lactim-O-sulphonic acid and a solvent, the reaction being carried out in the presence of an acid cation exchanger. The invention relates in particular to a process in which the alicyclic ketoxime is represented by the following general formula: ##STR1## where R is a linear or branched alkylidene group containing from 3 to 20 carbon atoms.

REFERENCES:
patent: 3836525 (1974-09-01), Masaki et al.
patent: 3944542 (1976-03-01), de Rooij et al.

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