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특허 상세정보

Process for preparing 2-oxindoles and N-hydroxy-2-oxindoles

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) C07D-209/34   
미국특허분류(USC) 548/486; 560/023
출원번호 US-0380765 (1995-01-30)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Townsend and Townsend and Crew LLP
인용정보 피인용 횟수 : 33  인용 특허 : 6
초록

The present invention provides a processes, having practical utility, for preparing 2-oxindoles, N-hydroxy-2-oxindoles, or mixtures thereof comprising: catalytically hydrogenating a 2-nitroarylmalonate diester to produce a 2-(N-hydroxyamino)arylmalonate diester, a 2-aminoarylmalonate diester, or mixtures thereof as a first reaction intermediate; cyclizing, by intramolecular aminolysis of one ester group, the first reaction intermediate to produce a N-hydroxy-2-oxindole-3-carboxylate ester, 2-oxindole-3-carboxylate ester, or mixtures thereof as a second r...

대표
청구항

1. A process for preparing a 2-oxindole, a N-hydroxy-2-oxindole, or mixtures thereof, comprising:A) catalytically hydrogenating a 2-nitroarylmalonate diester to produce a 2-(N-hydroxyamino)arylmalonate diester, a 2-aminoarylmalonate diester, or mixtures thereof as a first reaction intermediate; B) cyclizing, by intramolecular aminolysis of one ester group, the first reaction intermediate to produce a N-hydroxy-2-oxindole-3-carboxylate ester, 2-oxindole-3-carboxylate ester, or mixtures thereof as a second reaction intermediate; and C) hydrolyzing and deca...

이 특허를 인용한 특허 피인용횟수: 33

  1. Hamrin, Douglas; Lampe, Steve. Controls for multi-combustor turbine. USP2016039273606.
  2. Prabhu, Edan. Fuel oxidation in a gas turbine system. USP2017039587564.
  3. Prabhu, Edan D.. Gasifier power plant and management of wastes. USP2015069057028.
  4. Maslov, Boris A.. Gradual oxidation and autoignition temperature controls. USP2015129206980.
  5. Maslov, Boris A.. Gradual oxidation and autoignition temperature controls. USP2016039273608.
  6. Denison, Thomas Renau; Maslov, Boris A.. Gradual oxidation and multiple flow paths. USP2015038980193.
  7. Maslov, Boris A.. Gradual oxidation and multiple flow paths. USP2016059328660.
  8. Armstrong, Jeffrey. Gradual oxidation below flameout temperature. USP2016069371993.
  9. Maslov, Boris A.. Gradual oxidation below flameout temperature. USP2015038980192.
  10. Armstrong, Jeffrey; Martin, Richard; Hamrin, Douglas. Gradual oxidation with adiabatic temperature above flameout temperature. USP2016079381484.
  11. Maslov, Boris A.. Gradual oxidation with adiabatic temperature above flameout temperature. USP2015018926917.
  12. Maslov, Boris A.; Armstrong, Jeffrey. Gradual oxidation with flue gas. USP2017089726374.
  13. Hamrin, Douglas; Armstrong, Jeffrey. Gradual oxidation with heat control. USP2016069359948.
  14. Lampe, Steve; Hamrin, Douglas. Gradual oxidation with heat control. USP2016059347664.
  15. Lampe, Steve; Hamrin, Douglas. Gradual oxidation with heat control. USP2016059328916.
  16. Lampe, Steve; Hamrin, Douglas. Gradual oxidation with heat control. USP2016069359947.
  17. Maslov, Boris A.; Hamrin, Douglas. Gradual oxidation with heat exchange media. USP2015049017618.
  18. Armstrong, Jeffrey; Martin, Richard; Hamrin, Douglas. Gradual oxidation with heat transfer. USP2017029567903.
  19. Armstrong, Jeffrey; Maslov, Boris A.. Gradual oxidation with heat transfer. USP2016019234660.
  20. Hamrin, Douglas; Martin, Richard; Armstrong, Jeffrey. Gradual oxidation with heat transfer. USP2016059353946.
  21. Schnepel, Mark. Gradual oxidation with reciprocating engine. USP2014038671917.
  22. Schnepel, Mark; Maslov, Boris A.. Gradual oxidation with reciprocating engine. USP2014098844473.
  23. Prabhu, Edan. Heating a reaction chamber. USP2014018621869.
  24. Martin, Richard; Armstrong, Jeffrey; Hamrin, Douglas. Hybrid gradual oxidation. USP2017019534780.
  25. Merten, Joern; Renner, Svenja; Reichel, Carsten. Indolinone derivatives and process for their manufacture. USP2011118067617.
  26. Prabhu, Edan. Managing leaks in a gas turbine system. USP2013038393160.
  27. Hamrin, Douglas; Lampe, Steve. Multi-combustor turbine. USP2016039279364.
  28. Prabhu, Edan. Oxidizing fuel. USP2014038671658.
  29. Prabhu, Edan. Oxidizing fuel in multiple operating modes. USP2018039926846.
  30. Prabhu, Edan. Oxidizing fuel in multiple operating modes. USP2014048701413.
  31. Prabhu, Edan D.. Processing fuel and water. USP2014118893468.
  32. Armstrong, Jeffrey; Martin, Richard; Hamrin, Douglas. Staged gradual oxidation. USP2016029267432.
  33. Armstrong, Jeffrey; Martin, Richard; Hamrin, Douglas; Perry, Joe. Staged gradual oxidation. USP2014088807989.