Synthesis of cyclopentadiene derivatives

Details Synthesis of cyclopentadiene derivatives Synthesis of cyclopentadiene derivatives

2007-06-27

2009-12-22

Dentz, Bernard (Department: 1625)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

active

07635781

ABSTRACT:
A compound of formula (X):whereinR1, R2, equal to or different from each other are hydrogen or a linear or branched saturated or unsaturated C1-C20-alkyl, C3-C20-cycloalkyl, C6-C20-aryl, C7-C20-alkylaryl or C7-C20-arylalkyl radical, optionally containing heteroatoms belonging to groups 13-17 of the Periodic Table of the Elements; or they can form a C4-C7ring optionally containing O, S, N, P or Si atoms that can bear substituents;R3is hydrogen or a linear or branched saturated or unsaturated C1-C20-alkyl, C3-C20-cycloalkyl, C6-C20-aryl, C7-C20-alkylaryl or C7-C20-arylalkyl radical, optionally containing heteroatoms belonging to groups 13-17 of the Periodic Table of the Elements; or two adjacent R3groups can form a C4-C7ring optionally containing O, S, N, P or Si atoms, wherein said ring can bear substituents;and at least one of R1, R2or R3is different from hydrogen.

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