Process for the production of (thio) hydantoins

US4465840A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Bernhard Schulte · Krefeld, DE
• Wolfgang Jakob · Moers, DE
• Willi Dunwald · Leverkusen, DE
• Karl-Heinrich Meyer · Krefeld, DE

Key dates

• Filing date: Nov 1, 1982
• Grant date: Aug 14, 1984
• Expiry date: Nov 1, 2002

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G73/0616
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

This invention relates to a process for the production of compounds containing at least one (thio)-hydantoin ring in the molecule by reacting a carbodiimide with hydroxy- or mercapto-succinic acid diesters corresponding to the following general formula: ##STR1## wherein R.sup.4 and X are as defined in the description.