Process for the preparation of aralkyl hydroperoxides

US5032688A · kind A · utility

Assignee

• Peroxid-Chemie GmbH · DE

Inventors

• Maximilian Dorn · Pullach, DE
• Eberhard Hagel · Icking, DE
• Werner Zeiss · Puchheim, DE

Key dates

• Filing date: Nov 7, 1989
• Grant date: Jul 16, 1991
• Expiry date: Nov 7, 2009

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C409/12
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for the preparation of aralkyl hydroperoxides having the formula (I) is described ##STR1## in which n=1, 2 or 3, Ar means a phenyl group which can be substituted with halogen or one or more branched or straight chain alkyl groups with 1 to 5 C-atoms, or a naphthyl group, and each radical R.sup.1 and R.sup.2 means a low alkyl radical, the alkyl radicals R.sup.1 and R.sup.2 together having 2 to 4 carbon atoms, by reaction of aralkyl carbinols having the formula (II) ##STR2## in which Ar, R.sup.1, R.sup.2 and n have the meaning given for formula (I), with hydrogen peroxide under acid conditions, the reaction being carried out in the presence of an acid-combining agent. An alkali sulphate, ammonium sulphate, alkali hydrogen sulphate and/or ammonium hydrogen sulphate is used in preference as the acid-combining agent. Tert.aralkyl hydroperoxides can be prepared in high yield with a high purity in a simple and safe manner with this process.