3706756

Information

• Patent Grant
• 3706756

• References
• Source

• Patent Number

  3,706,756

• Date Filed

  Not available

• Date Issued

  Tuesday, December 19, 1972
  51 years ago

• CPC

  • C07D211/22 - by oxygen atoms
  • C07C47/453 - containing six-membered aromatic rings
  • C07C49/675 - having three rings
  • C07C49/755 - a keto group being part of a condensed ring system with two or three rings, at least one ring being a six-membered aromatic ring
  • C07C213/02 - by reactions involving the formation of amino groups from compounds containing hydroxy groups or etherified or esterified hydroxy groups
  • C07C2103/94 - containing "free" spiro atoms

• US Classifications

  • 564 - Organic compounds
  • 250 - Radiant energy
  • 260 - Chemistry of carbon compounds
  • 540 - Organic compounds
  • 544 - Organic compounds
  • 546 - Organic compounds
  • 548 - Organic compounds
  • 558 - Organic compounds
  • 560 - Organic compounds
  • 562 - Organic compounds
  • 568 - Organic compounds