Patent ID: 6417418
Filing Date: 2002-07-09
Classification: C07C,C07F,C08F,Y10S

Abstract:
A bis-cyclopentadienyl compound, having the following general formula (IV):HAâ€³â€”CH2â€”Bâ€”Aâ€²Hâ€ƒâ€ƒ(IV) wherein B represents an unsaturated divalent organic residue having from 1 to 30 carbon atoms, bonded, respectively, directly to the ring of group Aâ€² and to the â€”CH2-methylene group by means of unsaturated atoms different from hydrogen, and each Aâ€²H or Aâ€³H group independently represents a neutral organic radical containing a cyclopentadienyl ring which can be represented by the following formula (IV-bis): wherein each substituent R1,R2, R3 and R4 independently represents hydrogen, halogen, an aliphatic or aromatic C1-C20 hydrocarbyl group optionally comprising one or more heteroatoms different from carbon and hydrogen, or, wherein at least any two of the substituents R1, R2 R3 and R4, adjacent to each other, are joined to each other to form a saturated or unsaturated C4-C20 cyclic structure, comprising a bond of the cyclopentadienyl ring, said structure optionally one or more of the heteroatoms specified above, and the hydrogen atom represented at the centra of the cycle is indifferently bound to any of the carbon atoms of the cyclopentadienyl ring, and the dotted circle schematically represents the two double conjugated bonds on the remaining four atoms of the cyclopentadienyl ring.