C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/304, 260/311
C07D 253/06 (2006.01) C07D 253/075 (2006.01) C07D 263/34 (2006.01) C07D 263/44 (2006.01) C07D 413/04 (2006.01)
Patent
CA 1185973
Abstract Novel 5-acyloxy-4(5H)-oxazolonium salts of the formula (I) Image in which R1 represents an optionally substituted aliphatic group with up to 12 carbon atoms, an optionally substituted cycloalkyl group with 3 to 10 carbon atoms, an optionally substituted phenyl or naphthyl group or an optionally substituted heterocyclic group and R2 and R3 are identical or different and repre- sent a hydrogen atom or an optionally substituted aliphatic group with up to 8 carbon atoms or an optionally substituted phenyl group and X.THETA. represents the anion of an inorganic or organic acid having a pKa value of less than 2, are obtained in solution when an acyl cyanide of the general formula R1-CC-CN (II) is reacted with a carboxylic acid anhydride of the general formula R2-CO-O-CO-R3 (III) wherein R1, R2 and R3 each have the abovementioned meaning, in the presence of one or more inorganic or organic acids having a pKa value of less than 2, and if appropriate in the presence of a solvent, and if appropriate at a temperature between 0 and 120°C. The novel oxazolonium salts (I) can be used as intermediate products for the preparation of known, herbicidally active 3,4,6-trisubstituted 1,2,4-trianzin- 5(4H)-ones.
401380
Blank Heinz U.
Bonse Gerhard
Marzolph Gerhard
Aktiengesellschaft Bayer
Fetherstonhaugh & Co.
LandOfFree
5-acyloxy-4(5h)-oxazolonium salts, process for their... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with 5-acyloxy-4(5h)-oxazolonium salts, process for their..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and 5-acyloxy-4(5h)-oxazolonium salts, process for their... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1301401