Patent · US Expired

Process for preparing .alpha.-amino-.beta.'-nitroanthraquinones

US4102906A · kind A · utility

0Cited by

3References

11Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Wolfgang Auge
Karl-Werner Thiem · Charleston, US
Rutger Neeff

Key dates

Filing date	May 7, 1976
Grant date	Jul 25, 1978
Priority date	—
Expiry date	May 7, 1996

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C225/34
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

.alpha.-Amino-.beta.'-nitroanthraquinone is prepared by reacting .alpha.,.beta.'-dinitroanthraquinone with ammonia in an ether, an aliphatic, a cycloaliphatic or an optionally alkyl-substituted aromatic hydrocarbon, water or a mixture of the foregoing.

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