57743-37-0

Basic information

• Product Name: 9-nitro-6H-indolo[2,3-b]quinoxaline
• Synonyms: 6H-indolo[2,3-b]quinoxaline, 9-nitro-; 9-Nitro-6H-indolo[2,3-b]quinoxaline
• CAS NO: 57743-37-0
• Molecular Formula: C₁₄H₈N₄O₂
• Molecular Weight: 264.2389
• Mol File: 57743-37-0.mol
• Article Data: 6

Chemical Properties

• Boiling Point: 571°C at 760 mmHg
• Flash Point: 299.1°C
• Density: 1.569g/cm³
• Vapor Pressure: 1.86E-12mmHg at 25°C
• Refractive Index: 1.877
• CAS DataBase Reference: 9-nitro-6H-indolo[2,3-b]quinoxaline(CAS DataBase Reference)
• NIST Chemistry Reference: 9-nitro-6H-indolo[2,3-b]quinoxaline(57743-37-0)
• EPA Substance Registry System: 9-nitro-6H-indolo[2,3-b]quinoxaline(57743-37-0)

Safety Data

• Hazardous Substances Data: 57743-37-0(Hazardous Substances Data)

Upstream product

• 611-09-6 5-nitroisatin 
• 95-54-5 1,2-diamino-benzene 
• 243-59-4 indophenazine 

Relevant articles and documents

Synthesis and Some Reactions of 6H-Indolo[2,3-b]quinoxalines

Abstract: 6H-Indolo[2,3-b]quinoxalines were synthesized by condensation of isatin and 5-nitroisatin with o-phenylenediamine. The alkylation of the title compounds with dimethyl sulfate gave the corresponding quaternary salts which were converted to perchlorates and oxidized with potassium hexacyanoferrate(III) to previously unknown 5-methyl-6H-indolo[2,3-b]quinoxalin-3-one and its 9-nitro derivative. Treatment of 6H-indolo[2,3-b]quinoxalin-3-ones with dimethyl sulfate afforded 3-methoxyindoloquinoxalinium salts which were demethylated by the action of hydrobromic acid at 130–140°C. The structure of the isolated compounds was confirmed by IR and NMR spectra and elemental analyses.

Features of the reaction of isatin derivatives with ortho-phenylenediamine

-

REACTION OF o-PHENYLENEDIAMINE WITH ISATINS

It is shown that the reaction of o-phenylenediamine with isatins in the general case leads to mixtures of indoloquinoxalines, 3-(2'-aminophenyl)-2(1H)-quinoxalinones, and spiro.Spiro2H-benzimidazole-2,3'-in