Metallocene Compounds Having Appended Lewis Acids and Polymerization Therewith
申请人:ExxonMobil Chemical Patents Inc.
公开号:US20200071349A1
公开(公告)日:2020-03-05
This invention relates to metallocene compounds represented by the formula:
catalyst systems comprising said metallocene compound and an activator or a reaction product of the metallocene compound with the at least one activator, and polymerization processes using such metallocene compounds and activators, where Cp
a
and Cp
b
are optionally-substituted cyclopentadienyl rings; A is bridging group; q is zero or 1; Q is O, O(CR
3
R
4
)
m
, (CR
3
R
4
)
m
O, or (CR
3
R
4
)
m
; m is 0 to 18; Z is (CR
3
R
4
)
2
; LA is a Lewis acid; M is a transition metal; X
1
and X
2
are independently R
5
or OR
5
; R
1
and R
2
are independently selected from optionally-substituted hydrocarbyl groups; R
3
and R
4
are independently selected from the group consisting of H, halogen, and an optionally-substituted hydrocarbyl group; and R
5
is alkyl, aryl, perfluoroalkyl, or perfluoroaryl.
这项发明涉及由以下公式表示的茂金属化合物:
包括所述茂金属化合物和活化剂或所述茂金属化合物与至少一个活化剂的反应产物的催化剂体系,以及使用这种茂金属化合物和活化剂的聚合过程,其中Cp
a
和Cp
b
是可选择取代的环戊二烯基环;A是桥连基;q为零或1;Q为O、O(CR
3
R
4
)
m
、(CR
3
R
4
)
m
O或(CR
3
R
4
)
m
;m为0至18;Z为(CR
3
R
4
)
2
;LA为路易斯酸;M为过渡金属;X
1
和X
2
独立地为R
5
或OR
5
;R
1
和R
2
独立地选自可选择取代的烃基团;R
3
和R
4
独立地选自H、卤素和可选择取代的烃基团的群;R
5
为烷基、芳基、全氟烷基或全氟芳基。
A Platform of Phenol-Based Nitroxide Radicals as an “EPR Toolbox” in Supramolecular and Click Chemistry
作者:Till Hauenschild、Dariush Hinderberger
DOI:10.1002/cplu.201800429
日期:2019.1
group(s) on each SP/SL, the synthesized nitroxideradicals serve as polyphilic molecular "toolbox" for the EPR-spectroscopic detection and characterization of specific types of interactions, e. g. π-π interactions, sulfur-sulfur interactions, hydrogenbonding, electrostatic and dipole-dipole interactions, and van der Waals and hydrophobic interactions, in the presence of the selected supramolecular systems
Molecular Tectonics. Porous Hydrogen-Bonded Networks Built from Derivatives of Pentaerythrityl Tetraphenyl Ether
作者:Dominic Laliberté、Thierry Maris、James D. Wuest
DOI:10.1021/jo035311h
日期:2004.3.1
groups according to well-established motifs, thereby producing three-dimensional networks. In forming these networks, each molecule of compound 3 forms a total of 12 hydrogen bonds with six others, whereas each molecule of compound 4 forms a total of 16 hydrogen bonds with four others. Both networks are highly porous and define significant interconnected channels for the inclusion of guests. In crystals
Cationic Shape-Persistent Macrocycles: The Unexpected Formation of a Nano-Size Supramolecular Dimer
作者:Svetlana Klyatskaya、Nico Dingenouts、Christine Rosenauer、Beate Müller、Sigurd Höger
DOI:10.1021/ja057999g
日期:2006.3.1
Shape-persistentmacrocycles with a rigid pyridyl core and a flexible oligo-alkyl corona aggregate to some extent in nonpolar solvents to form large (tubular) aggregates. To increase the assembling tendency, the intraannular pyridyl groups of the macrocycles were alkylated. Unexpectedly, the quarternized macrocycles show no tendency at all to form tubular micellar-like structures but form well-defined
具有刚性吡啶基核和柔性低聚烷基电晕的形状持久性大环在非极性溶剂中在一定程度上聚集形成大(管状)聚集体。为了增加组装趋势,大环的环内吡啶基被烷基化。出乎意料的是,通过 X 射线和动态光散射确定,季铵化大环根本没有形成管状胶束状结构的趋势,而是形成定义明确的二聚体。
Röntgenkontrastmittel auf der Basis jodierter Phenoxyfettsäuren
作者:H. Cassebaum
DOI:10.1002/ardp.19592921102
日期:——
Die Darstellung mono‐, di‐, tri‐ und tetrajodierter Phenoxyfettsäuren durch Kondensation jodierter Phenole mit geeigneten Halogenfettsäureestern oder durch Jodieren von Phenoxyfettsäuren mit JCL wird beschrieben. Bessere Herstellungsmethoden bekannter Jodphenole und die Synthesen einiger di‐, tri‐ und tetrajodierter Phenole werden angegeben. Zwei Versuchezur Gewinnung der Tetrajod‐m‐aminobenzoesäure
Die Darstellung mono-, di-, tri- und tetrajodierter Phenoxyfettsäuren durch Kondensation jodierter Phenole mit geeigneten Halogenfettsäureestern oder durch Jodieren von Phenoxyfettsäuren mit JCL wird beschrieben。Bessere Herstellungsmethoden bekannter Jodphenole und die Synthesen einiger di-, tri- und tetrajodierter Phenole werden angegeben。Zwei Versuche zur Gewinnung der Tetrajod-m-aminobenzoesäure