Ciba-geigy Corporation

Ciba-geigy Ag

Jean Riethmann

Tibor Somlo

Franz Marti

Claude Gremmelmaier

A process for the production of cyameluric chloride is disclosed which comprises passing cyanuric chloride, mixtures of cyanuric chloride and cyanogen chloride, or cyanogen chloride, at temperatures of 200.degree. to 700.degree. C., together with oxygen over active charcoal, and separating the resulting cyameluric chloride by desublimation from the gas mixture obtained. Cyameluric chloride is a valuable intermediate.

Process for producing cyameluric chloride

The invention describes a process for the production of benzal or benzyl bromides which contain electrophilic substituents in the ortho- and/or para-position, or mixtures thereof, by the side-chain bromination of correspondingly substituted toluene, which comprises introducing elementary chlorine, under irradiation with visible light, into a two-phase system consisting of an aqueous phase and an organic phase and containing a correspondingly substituted toluene, at least one metal bromide, and a base, and also the compounds obtained by this process.

Growing community of inventors

Rheinfelden, Switzerland

Jean Riethmann