Patent · US Expired

Preparation of 1-amino-2-bromo-4-hydroxyanthraquinone

US5082957A · kind A · utility

0Cited by

3References

3Claims

0Family size

Assignee

BASF SE

Inventor

Gerhard Epple · Bad Dürkheim, DE

Key dates

Filing date	Nov 17, 1989
Grant date	Jan 21, 1992
Priority date	—
Expiry date	Nov 17, 2009

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09B1/503
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

1-Amino-2-bromo-4-hydroxy-anthraquinone (I) ##STR1## is prepared by brominating 1-amino-4-hydroxyanthraquinone (II) ##STR2## in an inert aprotic organic liquid.

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