Polycyclic compounds
US5968252A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 1998 |
| Grant date | Oct 19, 1999 |
| Priority date | — |
| Expiry date | Mar 24, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B57/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Compounds of formula ##STR1## wherein R and R' are each independently of the other hydrogen, C.sub.1 -C.sub.18 alkyl, COR.sub.1, COR.sub.2 or COOR.sub.1, PA1 X and X' are each independently of the other hydrogen, halogen, OH, NH.sub.2, COOH, C.sub.1 -C.sub.18 -alkyl, isocyclic or heterocyclic aromatic radicals, OR.sub.3, OCOR.sub.3, OCOR.sub.4, OCOR.sub.3, NHR.sub.3, N(R.sub.3).sub.2, NHCOR.sub.3, NHCOR.sub.4 or NHCOOR.sub.3, PA1 Y and Y' are each independently of the other hydrogen, halogen, OH, NH.sub.2, nitro, cyano, C.sub.1 -C.sub.18 alkyl, isocyclic or heterocyclic aromatic radicals, COR.sub.5, COR.sub.6, COOR.sub.5, COOR.sub.6, CONH.sub.2, SO.sub.2 R.sub.5, SO.sub.2 R.sub.6, SO.sub.2 NH.sub.2, SO.sub.3 H, PO(OR.sub.5).sub.2 or PO(OH).sub.2, and PA1 Z and Z' are each independently of the other hydrogen, halogen, OH, NH.sub.2, COOH, cyano, C.sub.1 -C.sub.18 alkyl, isocyclic or heterocyclic aromatic radicals, OR.sub.7, OR.sub.8, OCOR.sub.7, OCOR.sub.8, OCOOR.sub.7, NHR.sub.7, N(R.sub.7).sub.2, NHR.sub.8, CONH.sub.2, NHCOR.sub.7, NHCOR.sub.8 or COOR.sub.7, PA1 R.sub.1, R.sub.3, R.sub.5 and R.sub.7 are each independently of one another C.sub.1 -C.sub.18 alkyl, and R.sub.2, R.sub.4…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.