Process for the preparation of 1H-tetrazole-1 compounds using trimethylsilyl azide

US4426531A · kind A · utility

Assignee

• Dynamit Nobel GmbH · DE

Inventors

• Gunter Bison · Troisdorf, DE
• Norbert Linkat
• Wolfgang Wolfes · Niederkassel, DE

Key dates

• Filing date: Nov 19, 1981
• Grant date: Jan 17, 1984
• Expiry date: Nov 19, 2001

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D257/04
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for the preparation of 1H-tetrazole-1-acetic acid or its ester which comprises contacting trimethylsilyl azide with an orthocarboxylic acid ester of the formula EQU R.sub.1 C(OR).sub.3 wherein PA1 R.sub.1 is hydrogen or C.sub.1-8 alkyl, PA1 R is alkyl and glycine, an ester thereof, a salt thereof or an ester hydrochloride or the resultant imino ether obtained from reaction of glycine, its ester or salt and the orthocarboxylic acid ester.