69825-83-8

Usage

Application

6-Nitro-2,5-pyridinediamine is a useful research chemical compound.

InChI:InChI=1/C5H6N4O2/c6-3-1-2-4(7)8-5(3)9(10)11/h1-2H,6H2,(H2,7,8)

Upstream product

• 27808-53-3 pyrido<2,3-c>furoxane 
• 28664-54-2 2-nitro-3-azidopyridine 
• 607383-65-3 5-[(6-amino-5-(3-pyridinyl-diazenyl)-2-pyridinyl)amino]-5-oxopentanoic acid 
• 607383-62-0 5-[5-amino-6-nitro-2-(pyridinyl)amino]-5-oxopentanoic acid 

Relevant academic research and scientific papers

Composition and method for dyeing dye-susceptible material

Composition for colouring dye-susceptible material (preferably keratinous material), containing at least one pro-dye (especially a glutaramide) and at least one enzyme capable of reacting, cleaving, or modifying the enzymatically-labile functionality in the pro-dye to form a dye substance or a direct dye; as well as a 2-component-kit.

Process for the production of 2,5-diamino-6-nitro-pyridine derivatives, their use in hair dye compositions and new 2,5-diamino-6-nitropyridine derivatives

A process for producing 2,5-diamino-6-nitropyridine derivatives having the general formula (I) STR1 wherein R1 to R4 represent hydrogen or the radicals alkyl, hydroxy alkyl, dihydroxy alkyl, alkoxy alkyl, alkoxy carbonyl, hydroxy- or chlorine-substituted alkoxy carbonyl, aminoalkyl and aminoalkyl substituted by alkyl or hydroxy alkyl groups, the alkyl groups in each case containing 1 to 4 carbon atoms or an oxazolidinone ring being formed by R1 and R2 and/or R3 and R4. The present invention also relates to novel 2,5-diamino-6-nitropyridine derivatives and to a hair dyeing agent containing 2,5-diamino-6-nitropyridine derivatives, which are direct nitro dyes coloring the hair yellow orange to blue violet and are physiologically harmless.

Pyrido[2,3-c]furoxan as a probable intermediate in the reaction of 2-nitro-3-azidopyridine with amines

Two parallel reactions, viz., cyclization of 2-nitro-3-azidopyridine to pyrido-[2,3-c]furoxan, which is aminated in the 6 position of the pyridine ring with opening of the furoxan ring, and reduction of the azido group to form 2-nitro-3-aminopyridine, occur in the reaction of 2-nitro-3-azidopyridine with amines. It was established that pyrido[2,3-c]furoxan reacts with amines in aqueous media in the 1-oxide form.