Patent · US Expired

Process for the preparation of 1-aminoanthraquinone

US3933867A · kind A · utility

4Cited by

0References

6Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

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

Key dates

Filing date	Mar 22, 1974
Grant date	Jan 20, 1976
Priority date	—
Expiry date	Mar 22, 1994

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09B1/22
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Process for the preparation of 1-aminoanthraquinone by reaction of 1-nitroanthraquinone with ammonia in organic solvents, characterised in that the reaction is carried out in ethers, aliphatic or cycloaliphatic hydrocarbons or optionally alkyl-substituted aromatic hydrocarbons.

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