IPC Main Group
C07C 67/00 Preparation of carboxylic acid esters
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- ORGANIC CHEMISTRY
- Subclass:
- ACYCLIC OR CARBOCYCLIC COMPOUNDS
Related Keywords
preparation of CARBOXYLIC or salts, halides, anhydrides, derivatives, esters or nitriles thereofpreparation of ESTERS of carboxylic acidssynthetic GLYCERIDES
22 direct subcodes
Child Classifications
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- C07C 67/02 by interreacting ester groups, i.e. transesterification
- C07C 67/03 by reacting an ester group with a hydroxy group
- C07C 67/035 by reacting carboxylic acids or symmetrical anhydrides with saturated hydrocarbons
- C07C 67/04 by reacting carboxylic acids or symmetrical anhydrides onto unsaturated carbon-to-carbon bonds
- C07C 67/08 by reacting carboxylic acids or symmetrical anhydrides with the hydroxy or O-metal group of organic compounds
- C07C 67/1 by reacting carboxylic acids or symmetrical anhydrides with ester groups or with a carbon-halogen bond
- C07C 67/12 from asymmetrical anhydrides
- C07C 67/14 from carboxylic acid halides
- C07C 67/16 from carboxylic acids, esters or anhydrides wherein one oxygen atom has been replaced by a sulfur, selenium or tellurium atom
- C07C 67/18 by conversion of a group containing nitrogen into an ester group
- C07C 67/24 by reacting carboxylic acids or derivatives thereof with a carbon-to-oxygen ether bond, e.g. acetal, tetrahydrofuran
- C07C 67/27 from ortho-esters
- C07C 67/28 by modifying the hydroxylic moiety of the ester, such modification not being an introduction of an ester group
- C07C 67/3 by modifying the acid moiety of the ester, such modification not being an introduction of an ester group
- C07C 67/36 by reaction with carbon monoxide or formates
- C07C 67/39 by oxidation of groups which are precursors for the acid moiety of the ester
- C07C 67/44 by oxidation-reduction of aldehydes, e.g. Tishchenko reaction
- C07C 67/46 from ketenes or polyketenes
- C07C 67/465 by oligomerisation
- C07C 67/47 by telomerisation
Top Applicants
Top 10 applicants by patent filingsfor class C07, 2013–2023, worldwide · Source: EPO PATSTAT
- CHINESE ACADEMY OF SCIENCES 12,697
- ROCHE CH 11,347
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 11,024
- NOVARTIS CH 9,356
- BASF (BADISCHE ANILIN & SODA FABRIK) DE 8,531
- BRISTOL-MYERS SQUIBB COMPANY US 7,320
- LG CHEM KR 7,245
- REGENERON PHARMACEUTICALS US 6,816
- HARVARD UNIVERSITY US 6,190
- GENENTECH US 5,922