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20870-79-5

20870-79-5 Structure

20870-79-5 Structure
IdentificationMore
[Name]

5-NITROOXINDOLE
[CAS]

20870-79-5
[Synonyms]

2H-INDOL-2-ONE, 1,3-DIHYDRO-5-NITRO
5-NITRO-1,3-DIHYDROINDOLE-2-ONE
5-NITRO-2-OXINDOLE
5-NITROOXINDOLE
5-Nitrooxindole 96%
5-Nitroindolin-2-one
5-Nitrooxidole
[Molecular Formula]

C8H6N2O3
[MDL Number]

MFCD00456999
[Molecular Weight]

178.14
[MOL File]

20870-79-5.mol
Chemical PropertiesBack Directory
[Melting point ]

233-236 °C
[Boiling point ]

411.4±45.0 °C(Predicted)
[density ]

1.449±0.06 g/cm3(Predicted)
[storage temp. ]

Keep Cold
[form ]

solid
[pka]

12.61±0.20(Predicted)
[color ]

Beige
[InChI]

1S/C8H6N2O3/c11-8-4-5-3-6(10(12)13)1-2-7(5)9-8/h1-3H,4H2,(H,9,11)
[InChIKey]

JQCGHRDKVZPCRO-UHFFFAOYSA-N
[SMILES]

[O-][N+](=O)c1ccc2NC(=O)Cc2c1
[CAS DataBase Reference]

20870-79-5(CAS DataBase Reference)
Safety DataBack Directory
[Hazard Codes ]

Xi
[Risk Statements ]

R36/37/38:Irritating to eyes, respiratory system and skin .
R43:May cause sensitization by skin contact.
[Safety Statements ]

S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36/37:Wear suitable protective clothing and gloves .
[WGK Germany ]

3
[Hazard Note ]

Irritant/Keep Cold
[HS Code ]

2933790090
[Storage Class]

11 - Combustible Solids
[Hazard Classifications]

Eye Irrit. 2
Skin Irrit. 2
Skin Sens. 1
STOT SE 3
Hazard InformationBack Directory
[Uses]

  • Reactant for synthesis of 3-[4-(amino/methylsulfonyl)phenyl]methylene-indolin-2-one derivatives as novel COX-1/2 and 5-LOX inhibitors
  • Reactant for preparation of Aurora kinase inhibitors
  • Reactant for synthesis of 3-substituted 2-indolinone RET inhibitors
  • Reactant for synthesis of 4-azachromeno[2,3-b]indol-11(6H)-ones and derivatives as analogs of ellipticine
  • Reactant for preparation of [18F]fluorobenzylidene-indolinone as possible tyrosine kinase inhibitor for PET tumor imaging
  • Reactant for preparation of 3-substituted indolin-2-ones as neuroprotective and toxic agents
[Synthesis]

Oxindole

59-48-3

5-NITROOXINDOLE

20870-79-5

General procedure for the synthesis of 5-nitroindol-2-one from 2-indolone: 2-indolone (26 g) was dissolved in 100 mL of concentrated sulfuric acid at -15 °C and fuming nitric acid (8.4 mL) was added slowly and dropwise. The reaction temperature needs to be strictly controlled to ensure that it is maintained at -15 °C. After the dropwise addition was completed, the reaction mixture was continued to be stirred for 30 minutes. Subsequently, the reaction solution was carefully poured into ice water and a yellow precipitate was immediately generated. The precipitate was separated by filtration and 34 g of 5-nitroindol-2-one was finally obtained in 98% yield.

[References]

[1] Patent: US2005/256145, 2005, A1. Location in patent: Page/Page column 43
[2] Patent: US2005/256144, 2005, A1. Location in patent: Page/Page column 19
[3] Patent: US2010/75952, 2010, A1. Location in patent: Page/Page column 64
[4] Patent: EP2157093, 2010, A1. Location in patent: Page/Page column 61-62
[5] Patent: US6878733, 2005, B1. Location in patent: Page/Page column 169
Spectrum DetailBack Directory
[Spectrum Detail]

5-NITROOXINDOLE(20870-79-5)1HNMR
Well-known Reagent Company Product InformationBack Directory
[Sigma Aldrich]

20870-79-5(sigmaaldrich)
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