62051-99-4

Upstream product

• 1256156-69-0 C₁₁H₈Cl₂N₄ 
• 26820-72-4 N-(4-chlorophenyl)-3-nitro-2-pyridinamine 
• 106-47-8 4-chloro-aniline 
• 5470-18-8 2-Chloro-3-nitropyridine 
• 42048-23-7 N²-(4-chlorophenyl)pyridine-2,3-diamine 

Relevant academic research and scientific papers

A ligand-free copper (1) catalysed intramolecular N-arylation of diazoaminobenzenes in PEG-water: An expeditious protocol towards regiospecific 1-aryl benzotriazoles

An efficient and highly versatile method for the synthesis of diverse regiospecific 1-arylbenzotriazoles being important medicinal scaffolds, by the copper (1) catalysed intramolecular N-arylation of diazoaminobenzenes of 2-haloaryldiazonium salts in PEG-water has been developed. A very simple reaction protocol, large number of substrate affordability and excellent yields are the main features of this methodology.

The Preparation of All the Monochloro-α-carbolines and the Assignment of the 13C N.M.R. Spectrum of α-Carboline

The five previously unknown chloro-α-carbolines are prepared, the 1H n.m.r. spectra of the chloro-α-carbolines are described, and the 13C n.m.r. spectrum of α-carboline is assigned.

Synthesis and analgesic activity of 1,3-dihydro-3-(substituted phenyl)imidazo[4,5-6]pyridin-2-ones and 3-(substituted phenyl)-1,2,3-triazolo[4,5-b]pyridines

In a study of nonsteroidal antiinflammatory and analgesic agents, a series of 1,3-dihydro-3-(substituted phenyl)imidazo[4,5-b]pyridin-2-ones and 3-(substituted phenyl)triazolo[4,5-b]pyridines was prepared. Many of the imidazolones were alkylated on the free nitrogen. In a modified Randall-Selitto analgesic assay, the pain thresholds of both the inflamed and normal foot were elevated. This is not commonly observed with nonsteroidal antiinflammatory agents. The most active compounds were 1,3-dihydro-3-[3,4-(methylenedioxy)phenyl]imidazo[4,5-b]pyridin-2-one (I-15) and its N-allyl (I-21) and N-isopropyl (I-121) derivatives. In the triazole series the 3-(2-fluoro- and 2,4-difluorophenyl)triazolo[4,5-b]pyridines (T-1 and T-8) were the best. The imidazole compounds were somewhat superior in analgesic activity to codeine and d-propoxyphene without showing any narcotic characteristics. Some of the compounds also possessed activity against carrageenan-induced foot edema in the rat, so these compounds represent a new class of nonnarcotic analgesic antiinflammatories, capable of producing a greater degree of analgesia than that obtainable with other nonsteroidal antiinflammatory agents.

3-Phenyl,3H 1,2,3 triazolo[4,5-b]pyridines

3H-1,2,3-Triazolo[4,5-b]pyridines substituted in the 3-position have utility as analgesic, anti-inflammatory and anti-pyretic agents. They are prepared by diazotization of a 3-amino-2-(substitute) aminopyridine.