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Process for the preparation of a cyclic ketone.  

  Bibliographic data     Description     Claims     Mosaics     Original document     INPADOC legal status  

Publication number: ES2115171 (T3)
Publication date: 1998-06-16
Inventor(s): ALAS MICHEL [FR]; CROCHEMORE MICHEL [FR]
Applicant(s): RHONE POULENC CHIMIE
Classification:  
- international: B01J27/16; C07B61/00; C07C45/48; C07C49/395; C07C49/403; C07C49/413; C07C49/433; B01J27/14; C07B61/00; C07C45/00; C07C49/00; (IPC1-7): C07C45/48; C07C49/395
- European: C07C45/48
Application number: ES19940401123T 19940520 
Priority number(s): FR19930006477 19930528
   
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Also published as:
  EP0626364  (A1)  
  EP0626364  (B1)  
  JP7033703  (A)  
  JP7033703  (A)  
  FR2705667  (A1)  
 
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Abstract not available for ES 2115171  (T3)
Abstract of corresponding document: EP 0626364  (A1)
The subject of the present invention is a process for the preparation of a cyclic ketone from a dicarboxylic acid by decarboxylation and cyclisation. The process of preparation of the invention is characterised in that the reaction is carried out in the presence of an effective amount of a condensed or noncondensed neutral phosphate. The invention is more particularly targeted at the preparation of cyclopentanone from adipic acid and of 2,2-dimethylcyclopentanone from 2,2-dimethyladipic acid.
Data supplied from the esp@cenet database — Worldwide