Cyclopentadienyl derivatives and process for their preparation
US5900517A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 12, 1996 |
| Grant date | May 4, 1999 |
| Priority date | — |
| Expiry date | Aug 12, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2602/32
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Cyclopentadienyl derivatives are described having general formula (I) ##STR1## where R, R.sub.1, R.sub.2, R.sub.4, equivalent to or different from one another, are selected from: --H, alkyl radicals having a number of carbon atoms from 1 to 5, cycloalkyl radicals having a number of carbon atoms from 5 to 8, aryl and alkylaryl radicals having a number of carbon atoms from 6 to 8, aralkyl radicals having a number of carbon atoms from 7 to 9; n is an integer from 2 to 18; with the proviso that the number of R different from H does not exceed 2; with the exclusion of the compound having n=3, R.dbd.R.sub.1 .dbd.R.sub.2 .dbd.R.sub.4 .dbd.H. The invention a-so describes the process for the preparation of the above-mentioned cyclopentadienyl derivatives.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.