Process for the production of carboxylic acid anhydrides

Details Process for the production of carboxylic acid anhydrides Process for the production of carboxylic acid anhydrides

C - Chemistry, Metallurgy

07

C

C07C 51/56 (2006.01)

Patent

CA 2052632

Case 7623(2) ABSTRACT OF THE DISCLOSURE PROCESS FOR THE PRODUCTION OF CARBOXYLIC ACID ANHYDRIDES The solubility and stability of rhodium catalysts in rhodium-catalysed carbonylation of alkyl estsrs or alkyl ethers under substantially anhydrous conditions to produce carboxylic acid anhydrides is improved by the use of co-promoters selected from the group: 1,3-dialkyl-4-methylimidazolium iodide; 1,3-dialkyl-4-ethylimidazolium iodide; 1,3-dialky1-4-n-propylimidazolium iodide; 1,3-dialkyl-4-isopropylimidazolium iodide; 1,3-dialkyl-4-n-butylimidazolium iodide 1,3-dialkyl-4-sec-butylimidazolium iodide 1,3-dialkyl-4-tert-butylimidazolium iodide; 1,3-dialkyl-2,4,5-trimethylimidazolium iodide and mixtures thereof where the alkyl groups are independently C1 to C20 alkyl.

Affiliated with

Also associated with

Rating

Process for the production of carboxylic acid anhydrides does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the production of carboxylic acid anhydrides, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the production of carboxylic acid anhydrides will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1932390