2-Amino-3,5,disubstituted-4-halothiophenes and processes for the synthesis thereof
US5679800A · kind A · utility
1Cited by
10References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 15, 1992 |
| Grant date | Oct 21, 1997 |
| Priority date | — |
| Expiry date | Jul 15, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D333/38
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Compounds of the formula ##STR1## wherein R, R.sub.1 and R.sub.2 are as defined in the specification and R.sub.3 is amino or --N.dbd.N--K, wherein K is a coupling component radical. The compounds wherein R.sub.3 is --N.dbd.N--K are useful as disperse dyes, and those wherein it is amino are useful as intermediates in the synthesis of those wherein it is --N.dbd.N--K.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.