Preparation of phenyloxadiazolylanilines

US5104991A · kind A · utility

Assignee

• BASF SE

Inventors

• Joachim Jesse · Bad Dürkheim, DE
• Hartmut Kanter · Ludwigshafen, DE

Key dates

• Filing date: Feb 1, 1990
• Grant date: Apr 14, 1992
• Expiry date: Feb 1, 2010

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D271/06
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Phenyloxadiazolylanilines are prepared by reaction of a benzonitrile in an aqueous reaction medium first with hydroxylamine or an acid addition salt thereof to give a benzamideoxime and then with an isatoic anhydride to give a non-cyclic compound and subsequent cyclization, the reaction sequence being carried out in the presence of an anionic surfactant.