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AssigneeEnichem S.p.A.
InventorsPaolo Biagini, Roberto Santi, Giampiero Borsotti, Gabriele Lugli, Viviano Banzi
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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.
A process for the preparation of the compounds having formula (Ia):
A process for the preparation of the compounds having formula (Ib):
Cyclopentadienyl derivatives having formula (I) ##STR18## where R, R.sub.1, R.sub.2, R.sub.4, are the same as or different from one another and are selected from the group consisting of (i) hydrogen, (ii) alkyl radicals having from 1 to 5 carbon atoms, (iii) cycloalkyl radicals having from 5 to 8 carbon atoms, (iv) aryl and alkylaryl radicals having from 6 to 8 carbon atoms, and (v) aralkyl radicals having from 7 to 9 carbon atoms;
2,4,5,6,7,8-Hexahydroazulene.
4,5,6,7,8,9-Hexahydro-2H-cyclopentacyclooctene.
4,5,6,7,8,9,10,11,12,13-Decahydro-2H-cyclopentacyclododecene.
1-Methyl-4,5,6,7,8,9,10,11,12,13-decahydro-2H-cyclopentacyclododecene.
Dependencies are inferred from the claim text.