Production of aromatic amines

U.S. Patent Number: 5315040

Abstract: Aminoanthraquinones which are materials for dyes are prepared by allowing nitroanthraquinones to react with carbon monoxide and water in a liquid phase in the presence of a homogeneous catalyst comprising rhodium compounds or ruthenium compounds and solvents therefor.

Inventors: Nomura; Kotohiro (Ibaraki, JP); Ishino; Masaru (Ibaraki, JP)

Assignee: Sumitomo Chemical Company, Limited (Osaka, JP)

Application Number: 07/829,250

Issued: 1994-05-24

Expired: 2006-05-24

Classes: 564/422

Field of search: 564/422

Click the image above to view patent images at uspto.gov within a frame.

Click here for the fulltext page on uspto.gov within a frame.