Abstract

Bromination of certain phenols by bromine chloride was investigated, and the method was applied to quantitative measurements. Bromine chloride was prepared in the bromination flask in a hydrochloric acid medium from equivalent amounts of bromate and bromide (1 M : 2 M ). It as found that whilst the application of bromine chloride does not increase the number of compounds capable of being brominated, it raises the rate of bromination appreciably. Die Bromierung gewisser Phenole durch Bromchlorid wird untersucht, und die Methode wird auf quantitative Messungen angewandt. Die Anwendung von Bromchlorid vermehrt nicht die Anzahl der Verbindungen, die man bromieren kann, sondern hebt die Geschwindigkeit der Bromierung merklich. On a étudié la bromuration de certains phénols au moyen du chlorure de brome et a utilisé cette méthode comme moyen de dosage. A partir du bromate et du bromure en quantités équivalentes (1 M : 2 M ), le chlorure de brome a été préparé dans la fiole à bromuration en milieu acide chlorhydrique. On a trouvé que, bien que l'application du chlorure de brome n'augmente pas le nombre de composés susceptibles d'être bromurés, elle accroît sensiblement la vitesse de bromuration.

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