Preparation of a D-(+)-biotin intermediate

US5847152A · kind A · utility

Assignee

• Merck Patent GmbH · DE

Inventors

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

Key dates

• Filing date: Sep 26, 1996
• Grant date: Dec 8, 1998
• Expiry date: Sep 26, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D495/04
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to an improved process for making heterocyclic compounds suitable for intermediate products for making D-(+)-biotin and a process for making D-(+)-biotin itself.