Process for the preparation of a D-(+)-biotin intermediate

US5235065A · kind A · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Michael Schwarz · Pocking, DE
• Michael Casutt · Pfungstadt, DE
• Jurgen Eckstein · Roßdorf, DE

Key dates

• Filing date: Mar 5, 1992
• Grant date: Aug 10, 1993
• Expiry date: Mar 5, 2012

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07F3/02
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for the preparation of heterocyclic compounds which are suitable as intermediates for the preparation of D-(+)-biotin, and to a process for the preparation of D-(+)-biotin itself. The invention further relates to intermediates in this process.