Tertiary amides as solvents in anthrapyridone syntheses
US4386206A · kind A · utility
6Cited by
6References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1981 |
| Grant date | May 31, 1983 |
| Priority date | — |
| Expiry date | Sep 29, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B5/14
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Anthrapyridones are prepared in high yields from 1-aminoanthraquinones or 1-alkylaminoanthraquinones and phenylacetyl halides when tertiary amides are employed as reaction media. The phenylacetyl halides can be generated in situ from phenylacetic acid and thionyl halide or phosgene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.