66635-96-9

Basic information

• Product Name: dipyridin-3-yldiazene oxide
• Synonyms: dipyridin-3-yldiazene oxide
• CAS NO: 66635-96-9
• Molecular Formula: C10H8N4O
• Molecular Weight: 200.19672
• Mol File: 66635-96-9.mol
• Article Data: 3

Chemical Properties

• Appearance: /
• CAS DataBase Reference: dipyridin-3-yldiazene oxide(CAS DataBase Reference)
• NIST Chemistry Reference: dipyridin-3-yldiazene oxide(66635-96-9)
• EPA Substance Registry System: dipyridin-3-yldiazene oxide(66635-96-9)

Safety Data

• Hazardous Substances Data: 66635-96-9(Hazardous Substances Data)

Upstream product

• 2530-26-9 3-nitropyridine 
• 855636-33-8 3-nitroamino-isonicotinic acid 
• 409323-35-9 3-nitroamino-pyridine-2-carboxylic acid 
• 462-08-8 pyridin-3-ylamine 
• 7664-93-9 sulfuric acid 
• 7446-11-9 sulfur trioxide 
• 409324-20-5 [3,3']azoxypyridine-2,2'-dicarboxylic acid 
• 855636-02-1 [3,3']azoxypyridine-4,4'-dicarboxylic acid 
• 7579-20-6 3-Aminopyridine-4-carboxylic acid 
• 1462-86-8 3-amino-pyridine-2-carboxylic acid 

Relevant articles and documents

Peroxomonophosphoric Acid Oxidations. VI. Kinetics and Mechanism of Oxidation of 3-Aminopyridine

The oxidation of 3-aminopyridine to 3,3'-azoxypyridine by peroxomonophosphoric acid (PMPA) is a total second order reaction: first order each in peroxomonophosphoric acid and 3-aminopyridine at constant acidity.The observed pH-rate profile has been rationalized invoking various PMPA species, protonated and unprotonated forms of 3-aminopyridine as the reactive species and their reactivities have been estimated.Interestingly, 2-aminopyridine is not oxidized in the pH-range where the oxidation of 3-aminopyridine is facile.

An easy access to aromatic azo compounds under ultrasound/microwave irradiation

Chemoselective reduction of nitroarenes to azo and azoxy compounds was easily achieved using zinc powder and ammonium chloride in DMF or DMF-water (95:5) under high intensity ultrasound (US) or microwave (MW) irradiation, separately or combined. When carried out under conventional heating the reaction required much higher temperatures and gave lower yields. The addition of a small amount of water caused a dramatic increase in the reactivity, permitting the reduction of hindered nitroarenes at the expense of selectivity. A novel reactor for combined US/MW irradiation was employed which demonstrated additional beneficial effects. Georg Thieme Verlag Stuttgart.