Patent · US Expired

Preparation of chlorinated indazoles

US4084055A · kind A · utility

1Cited by

0References

17Claims

0Family size

Assignee

E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

Dennis L. Fost · Newark, US
Anthony D. Wolf · Toronto, CA

Key dates

Filing date	Mar 24, 1977
Grant date	Apr 11, 1978
Priority date	—
Expiry date	Mar 24, 1997

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D231/56
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

This invention relates to a novel process for preparing indazoles by the reaction of phosgene with indazolones. The resulting indazoles are useful as herbicidal compounds.

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