Patent · US Expired

Process for preparing triazolinethione derivatives

US6172236A · kind A · utility

1Cited by

1References

4Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Manfred Jautelat · Burscheid, DE
David Erdman · Neunburg vorm Wald, DE

Key dates

Filing date	Apr 4, 2000
Grant date	Jan 9, 2001
Priority date	—
Expiry date	Apr 4, 2020

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D249/12
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

According to a novel process, triazolinethione derivatives of the formula ##STR1## in which PA1 R.sup.1 and R.sup.2 are each as defined in the description can be prepared by reacting triazole derivatives of the formula ##STR2## PA1 with sulphur in the presence of an aprotic polar diluent at temperatures between 140.degree. C. and 160.degree. C., PA1 where the amounts of the reaction components are chosen such that between 6 and 15 mol of sulphur are present per mole of triazole derivative of the formula (II), PA1 and where air is passed over the reaction mixture during the reaction.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.