Patent · US Expired

Thiophene compounds and their manufacture

US4239897A · kind A · utility

5Cited by

1References

9Claims

0Family size

Assignee

BASF SE

Inventors

Phillip A. Rossy · Ludwigshafen, DE
Werner Hoffmann · Ludwigshafen, DE

Key dates

Filing date	Sep 15, 1978
Grant date	Dec 16, 1980
Priority date	—
Expiry date	Sep 15, 1998

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D333/38
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

New thiophene compounds and a new process for the manufacture of thiophene compounds by dehydrogenating dihydrothiophene with certain halogen compounds. The products are starting materials for the manufacture of pharmaceuticals, dyes and plant protection agents and, in particular, for the manufacture of additives to foodstuffs, feeds, beverages and pharmaceuticals.

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