| 摘要 |
Cyclopentadienyl derivatives are described having general formula (I) where R, R1, R2, R4, 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=R1=R2=R4=H. The invention a-so describes the process for the preparation of the above-mentioned cyclopentadienyl derivatives.
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