Process for preparing N-cyclohexylthiophthalimide

US5719294A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Adolf Sicheneder · Hohenlockstedt, DE
• Wilfried Nolte · Leverkusen, DE
• Harro Schlesmann · Odenthal, DE
• Thomas Kleiner · Odenthal, DE

Key dates

• Filing date: Nov 13, 1996
• Grant date: Feb 17, 1998
• Expiry date: Nov 13, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D209/48
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The preparation of N-cyclohexylthiophthalimide from cyclohexylsulphenyl chloride and phthalimide can be reproduced more reliably if the cyclohexylsulphenyl chloride is prepared in sire by chlorinating dicyclohexyl disulphide.