Examples of 'fluorenyl' in a sentence
Meaning of "fluorenyl"
Fluorenyl is a chemical compound containing a fluorine atom. It is commonly used in organic chemistry and pharmaceutical research. Fluorenyl derivatives have interesting properties that make them useful in various applications
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- A radical or cation derived from fluorene
How to use "fluorenyl" in a sentence
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fluorenyl
The corresponding fluorenyl alkyl halides were obtained.
Ml of piperidine is then added to remove the fluorenyl groups.
The fluorenyl group is preferably unsubstituted.
The solvent was evaporated to yield yellow fluorenyl lithium.
Fluorenyl may also be employed.
This invention relates to fluorenyl compounds.
Another preferred catalyst is a tertiary butyl disubstituted cyclopentadienyl fluorenyl.
Examples of such substituted fluorenyl groups include benzofluorenyl and dibenzofluorenyl.
Flu is a substituted or unsubstituted fluorenyl.
The thienyl units connect the conjugated fluorenyl dendrons to porphyrin ring by alkynyl bridges.
Examples of these multicyclic rings include indenyl and fluorenyl rings.
Z is selected from an unsubstituted fluorenyl radical or a symmetrically-substituted fluorenyl radical.
Hereinafter the wording cyclopentadienyl derivative is meant to include also an indenyl or a fluorenyl derivative.
An example is a fluorenyl group.
The second catalyst component can comprise a single atom bridged metallocene compound with a fluorenyl group.
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The fluorenyl derivative catalyst ability to polymerize propylene is exemplified in table 2.
A second reaction to form the bridged fulvene fluorenyl ligand was carried out.
In one preferred embodiment, the catalyst is a methyl cyclohexyl disubstituted cyclopentadienyl fluorenyl.
Aryl includes naphthyl, anthracyl, fluorenyl and indenyl but is preferably phenyl.
METALLOCENE COMPOUNDS The present invention employs a bridged metallocene compound having both a cyclopentadienyl and a fluorenyl moiety.
The fluorenyl anion solution from above was then added dropwise over 1 hour.
The precursor for the organic radical Z can be unsubstituted fluorenyl or substituted fluorenyl.
Preferably, the fluorenyl radical is disubstituted with t-butyl radicals.
Most preferably, the substituents on the fluorenyl are the same.
They can be part of fused-ring systems such as indenyl and fluorenyl.
Another aspect of this invention relates to fluorenyl compounds having substitution at the 9 position.
To this is then added 1 ml of piperidine to remove the fluorenyl group.
The catalyst system of claim 4 wherein the fluorenyl radical is disubstituted with t-butyl radicals.
To this reaction mixture is then added 1 ml of piperidine to remove the fluorenyl group.
Cp 2 is advantageously a cyclopentadienyl, fluorenyl or indenyl group, this group being substituted or unsubstituted.
To illustrate this point, consider the MePhC - cyclopentadienyl fluorenyl zirconium dichloride.
Cyclopentadienyl also encompasses fused-ring systems including but not limited to indenyl and fluorenyl.
These catalysts are collectively referred to herein as fluorenyl metallocene catalysts ( FMC ).
Non-limiting examples of such annulated aryl rings are naphthyl, tetrahydronaphthyl, phenanthryl and fluorenyl.
When Cs symmetry is desired, both the cyclopentadienyl and the fluorenyl groups are preferably unsubstituted.
Examples of the fused ring group include indanyl, dihydronaphthyl, tetrahydronaphthyl, fluorenyl.
Also methods for preparing such 9-substituted fluorenyl compounds are presented.
Cp1 and Cp2 are independently a ligand with a cyclopentadienyl backbone, preferably cyclopentadienyl, indenyl, or fluorenyl.
Aryl includes phenyl, naphthyl, anthracyl, fluorenyl and indanyl but is preferably phenyl.
Preferably the catalyst complex contains two bridged cyclopentadienyl, indenyl or fluorenyl ligands.
This suggests that reduced ( n3 - ) coordination of the fluorenyl ligand occurs in complex II in solution.
N 1 ; and wherein the derivative has a partially or fully saturated indenyl or fluorenyl moiety.
The amount of supported bridged fluorenyl compound recovered was 3.16 g.
All have conjugated dendrons with bridged phenyl-alkynyl and are terminated by fluorenyl groups.
Furthermore, Cp1, Cp2 are cyclopentadienyl, fluorenyl or indenyl groups, which may be substituted.
Metallocene catalysts comprise a transition metal compound which contains a cyclopentadienyl, indenyl or fluorenyl ligand.
R2, R3 and Z together represent a fluorenyl or xanthenyl group ;.
More specifically, this invention relates to organometallic compounds containing at least one fluorenyl ligand.
R5, R6 and Z may together represent a fluorenyl group or a xanthenyl group ; or.
Examples of polycyclic group having cyclopentadienyl skeleton include indenyl group, and fluorenyl group.
