Patent · US Expired

Intermediates for the preparation of phenylsulfonylurea herbicides and plant growth regulators

US5723409A · kind A · utility

8Cited by

4References

7Claims

0Family size

Assignee

Hoechst Schering Agrevo GmbH · DE

Inventors

Gerhard Schnabel · Elsenfeld, DE
Lothar Willms · Hillscheid, DE
Klaus Bauer · Rodgau, DE
Hermann Bieringer · Eppstein, DE

Key dates

Filing date	Apr 28, 1995
Grant date	Mar 3, 1998
Priority date	—
Expiry date	Apr 28, 2015

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C335/28
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The compounds of the formula (I) ##STR1## in which R.sup.1 -R.sup.4, W, X, Y and Z are as defined in claim 1 are suitable for controlling harmful plants in crops. Their preparation may employ the intermediates of the formulae II and III: ##STR2##

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