Selective Propargylation of Diaryl Azo Compounds Using Metallic Barium

Barium and Barium Compounds

The International Programme on Chemical Safety (IPCS), established in 1980, is a joint venture of the United Nations Environment Programme (UNEP), the International Labour Organization (ILO), and the World Health Organization (WHO). The overall objectives of the IPCS are to establish the scientific basis for assessment of the risk to human health and the environment from exposure to chemicals, ...

Barium and Barium Compounds

Azo mesogenic compounds

Series of elongated azo esters containing three rings with methyl moiety as one of the terminal carbon chain and various substituents R(R=H,CH3,OCH3,NO2,Cl) at the other end of the molecule have been isolated , and their structure were were characterized by H-NMR and IR as well as elemental analysis . The mesomorphic properties of these compounds were investigated via differential scanning calo...

Biodegradation of azo dye compounds

Azo dyes are one of the oldest industrially synthesized organic compounds characterized by presence of Azo bond (-N=N-) and are widely utilized as coloring agents in textile, leather, cosmetic, paint, plastic, paper, and food industries During textile processing, inefficiencies in dyeing result in large amounts of the dyestuff (varying from 2% loss when using basic dyes to a 50% loss when certa...

A novel Kolbe reaction pathway for a selective one- and two-electron reduction of azo compounds.

The selective one- and two-electron reduction of azo-pyridine and azo-1,8-naphthyridine with anionic CH3COO- by the Kolbe reaction has been established for the first time, and reaction mechanisms are presented.