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IPC Main Group
C07C 253/00

Preparation of carboxylic acid nitriles

Introduced: January 1990

Last revised: January 2006

Classification Context

Section:
CHEMISTRY; METALLURGY
Class:
ORGANIC CHEMISTRY
Subclass:
ACYCLIC OR CARBOCYCLIC COMPOUNDS

12 direct subcodes

Child Classifications

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  • C07C 253/02 by reaction of nitrogen oxide with organic compounds
  • C07C 253/04 by reaction of cyanogen halides, e.g. ClCN, with organic compounds
  • C07C 253/06 from N-formylated amino compounds
  • C07C 253/14 by reaction of cyanides with halogen-containing compounds with replacement of halogen atoms by cyano groups
  • C07C 253/16 by reaction of cyanides with lactones or compounds containing hydroxy groups or etherified or esterified hydroxy groups
  • C07C 253/18 by reaction of ammonia or amines with compounds containing carbon-to-carbon multiple bonds other than in six-membered aromatic rings
  • C07C 253/2 by dehydratation of carboxylic acid amides
  • C07C 253/22 by reaction of ammonia with carboxylic acids with replacement of carboxyl groups by cyano groups
  • C07C 253/3 by reactions not involving the formation of cyano groups

Top Applicants

Top 10 applicants by patent filingsfor class C07, 2013–2023, worldwide · Source: EPO PATSTAT

  1. CHINESE ACADEMY OF SCIENCES 12,697
  2. ROCHE CH 11,347
  3. SINOPEC (CHINA PETROCHEMICAL CORPORATION) 11,024
  4. NOVARTIS CH 9,356
  5. BASF (BADISCHE ANILIN & SODA FABRIK) DE 8,531
  6. BRISTOL-MYERS SQUIBB COMPANY US 7,320
  7. LG CHEM KR 7,245
  8. REGENERON PHARMACEUTICALS US 6,816
  9. HARVARD UNIVERSITY US 6,190
  10. GENENTECH US 5,922