3821253

Information

• Patent Grant
• 3821253

• References
• Source

• Patent Number

  3,821,253

• Date Filed

  Not available

• Date Issued

  Friday, June 28, 1974
  50 years ago

• CPC

  • C07D317/30 - Radicals substituted by carbon atoms having three bonds to hetero atoms, with at the most one bond to halogen
  • C07C45/41 - by hydrogenolysis or reduction of carboxylic groups or functional derivatives thereof
  • C07C57/40 - containing condensed ring systems
  • C07C57/46 - containing six-membered aromatic rings and other rings
  • C07C57/58 - containing six-membered aromatic rings
  • C07C251/40 - to carbon atoms of an unsaturated carbon skeleton
  • C07C251/80 - the carbon skeleton containing rings
  • C07C309/24 - of a carbon skeleton containing six-membered aromatic rings
  • C07C323/22 - containing thio groups and doubly-bound oxygen atoms bound to the same carbon skeleton
  • C07C323/48 - to nitrogen atoms
  • C07C323/66 - containing sulfur atoms of sulfo, esterified sulfo or halosulfonyl groups, bound to the carbon skeleton
  • C07D317/12 - with only hydrogen atoms or radicals containing only hydrogen and carbon atoms, directly attached to ring carbon atoms
  • C07D317/16 - Radicals substituted by halogen atoms or nitro radicals
  • C07D317/20 - Free hydroxyl or mercaptan
  • C07D317/26 - Radicals substituted by doubly bound oxygen or sulfur atoms or by two such atoms singly bound to the same carbon atom

• US Classifications

  • 549 - Organic compounds
  • 560 - Organic compounds
  • 562 - Organic compounds
  • 564 - Organic compounds