Fluorene derivative and process for preparation thereof
US5011969A · kind A · utility
10Cited by
1References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 16, 1989 |
| Grant date | Apr 30, 1991 |
| Priority date | — |
| Expiry date | Nov 16, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2603/18
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Fluorene derivatives represented by the general formula (I): ##STR1## wherein R represents an alkyl group having 1 to 8 carbon atoms, a phenyl group of a C.sub.1 -C.sub.8 alkyl-substituted phenyl group, and a process for preparation thereof. These fluorene derivatives are synthesized by reacting fluorenone derivatives represented by the general formula (II): ##STR2## wherein R is the same as defined above, with malonitrile.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.