EP0866795A1 - Zirconocenes et hafnocenes avec ligands cyclopentadienyle boryles et procede de production correspondant - Google Patents

Zirconocenes et hafnocenes avec ligands cyclopentadienyle boryles et procede de production correspondant

Info

Publication number
EP0866795A1
EP0866795A1 EP96934773A EP96934773A EP0866795A1 EP 0866795 A1 EP0866795 A1 EP 0866795A1 EP 96934773 A EP96934773 A EP 96934773A EP 96934773 A EP96934773 A EP 96934773A EP 0866795 A1 EP0866795 A1 EP 0866795A1
Authority
EP
European Patent Office
Prior art keywords
zirconium
cyclopentadienyl
aryl
boron
bis
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP96934773A
Other languages
German (de)
English (en)
Inventor
Manfred T. Reetz
Hanno BRÜMMER
Christian Dieter Psiorz
Marc Willuhn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Studiengesellschaft Kohle gGmbH
Original Assignee
Studiengesellschaft Kohle gGmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Studiengesellschaft Kohle gGmbH filed Critical Studiengesellschaft Kohle gGmbH
Publication of EP0866795A1 publication Critical patent/EP0866795A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F17/00—Metallocenes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F4/00—Polymerisation catalysts
    • C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
    • C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
    • C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
    • C08F4/62—Refractory metals or compounds thereof
    • C08F4/64—Titanium, zirconium, hafnium or compounds thereof
    • C08F4/659—Component covered by group C08F4/64 containing a transition metal-carbon bond
    • C08F4/65912—Component covered by group C08F4/64 containing a transition metal-carbon bond in combination with an organoaluminium compound
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F4/00—Polymerisation catalysts
    • C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
    • C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
    • C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
    • C08F4/62—Refractory metals or compounds thereof
    • C08F4/64—Titanium, zirconium, hafnium or compounds thereof
    • C08F4/659—Component covered by group C08F4/64 containing a transition metal-carbon bond
    • C08F4/6592—Component covered by group C08F4/64 containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F4/00—Polymerisation catalysts
    • C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
    • C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
    • C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
    • C08F4/62—Refractory metals or compounds thereof
    • C08F4/64—Titanium, zirconium, hafnium or compounds thereof
    • C08F4/659—Component covered by group C08F4/64 containing a transition metal-carbon bond
    • C08F4/6592—Component covered by group C08F4/64 containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring
    • C08F4/65922—Component covered by group C08F4/64 containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring containing at least two cyclopentadienyl rings, fused or not
    • C08F4/65927—Component covered by group C08F4/64 containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring containing at least two cyclopentadienyl rings, fused or not two cyclopentadienyl rings being mutually bridged

Definitions

  • the present invention relates to a general synthetic method for the preparation of previously unknown zirconocenes and hafnocenes which carry a boron substituent directly on the cyclopentadienyl ligand. These compounds find a new use in the polymerization of olefins with cocatalysis of aluminum alkyl compounds.
  • a large number of metallocene-based catalyst systems are known in the literature. Common to all is the need for a cocatalyst that converts the metallocene into an active form that is able to polymerize olefins. A zirconium cation is generated according to the generally accepted concept.
  • MAO-free systems are based on the use of dialkyl metallocenes with "cationization reagents". Only "ligand-free” systems show good polymerization properties (R. F. Jordan, Adv. Organomet. Chem. 1991, 32, 325). Common cationization reagents are ammonium compounds (HW Turner, Eur. Pat. Appl.
  • Borylated zirconocenes and hafnocenes are not described in the literature. Their synthesis does not succeed according to common methods of metallocene synthesis (DJ Cardin, MF Läppert, CL Raston, Chemistry of Organo-Zirconium and - Hafnium Compounds, Ellis Horwood Ltd., Chichester, 1986), because in the treatment of borylated cyclopentadienes with bases or metalation reagents Breakage of the BC bond occurs.
  • the corresponding borylated zirconocenes and hafnocenes can be synthesized from simultaneously borylated and silylated precursors. There is no systematic access to the borylated and silylated cyclopentadienes.
  • Alkoxyboranes or amine adducts of alkylboranes can be introduced via metalated precursors (BM Mikhailov, TK Baryshnikova, VS
  • Halogen boranes are accessible via Si-B exchange and alkoxy boranes via Sn-B exchange (P. Jutzi, A. Seufert, J.
  • Halogen boranes with other radicals obtained a Si-B-cyclopentadiene, which by
  • cyclopentadienyl ligands can also be attached cyclopentadienyl ligands such as indenyl, tetrahydroindenyl, which in turn can carry substituents such as alkyl, aryl, benzyl radicals or heteroatoms such as halogens (F, Cl, Br, I), silicon and germanium.
  • substituents such as alkyl, aryl, benzyl radicals or heteroatoms such as halogens (F, Cl, Br, I), silicon and germanium.
  • the other cyclopentadienyl ligand can be the same as the first, but can also be boron-free and carry the same or different substituents as listed above.
  • L 'can be another cyclopentadienyl ligand like the first, i.e. H. carry the same or different substituents, but it can also be boron-free.
  • R 1 to R 4 can be different from R 5 to R s .
  • R 4 and R 8 can also contain methyl, ethyl, allyl, phenyl, aryl, benzyl radicals and heteroatoms such as halogens (F, Cl , Br, I), silicon, germanium. If the bridge consists of only one boron, then R 1 to R 4 are equal to R 5 to R 8 .
  • the substituent L on the boron of the cyclopentadienyl ligand or on the boron of the bridge can be alkyl, aryl, benzyl, fluorinated alkyl or aryl, halogens (F, Cl, Br, I), OH, alkoxy , where the residues can form part of a cycle.
  • the substituents X on the transition metal can be a halogen or nitrogen.
  • the same metallocene complexes can also be obtained by an alternative synthetic route.
  • boron-substituted cyclopentadiene compounds with weakly nucleophilic bases such as. B. lithium bis (trimethylsilyl) amide deprotonated and then converted by transmetallation into the corresponding metallocenes.
  • weakly nucleophilic bases such as. B. lithium bis (trimethylsilyl) amide deprotonated and then converted by transmetallation into the corresponding metallocenes.
  • the corresponding borylated zirconocenes and hafnocenes can be synthesized from all borylated precursors. In these cases, the precursors no longer necessarily have to be silylated. In the case of zirconocenes and hafnocenes with a one-member boron bridge, complexes are also accessible which have differently substituted cyclopentadienyl rings.
  • Zirconocenes and hafnocenes bridged differently can also be obtained by mild thermolysis of bisborylated zirconocene and hafnocene derivatives with alkoxy radicals on the boron:
  • the R 'radicals can be any alkyl or aryl groups.
  • zirconocenes and hafnocenes which can be prepared in this way are to be used as catalyst components in olefin polymerization, with an activity which is up to a factor of 10 greater than that of the parent compound Cp 2 ZrCl 2 of zirconocenes.
  • the solid still contains 10-20% of the bis ( ⁇ 5 - (3-methyl-2,3-dihydro-benzoboroyl) cyclopentadienyl) (dichloro) zirconium (IV).
  • the tan residue is recrystallized from a little hexane and the tan residue is dried again in an oil pump vacuum for 24 h. This process can be repeated several times, but it is never possible to remove all (chlorine) (trimethyl) tin.
  • the bis (pentafluorophenyl) (3-trimethylsilylcyclopentadienyl) borane is also always contaminated by higher molecular weight compounds. Due to its temperature sensitivity, distillation is not possible. Yield: approx. 80 - 90% (NMR)
  • a suspension of 4.02 g (12.2 mmol) of [bis (indenyl) (phenyl) borane] diüthium in 150 ml of toluene and 30 ml of diethyl ether is cooled to -78 ° C. and mixed with 2.85 g (12.2 mmol) of zirconium tetrachloride.
  • the mixture is allowed to warm to room temperature in a cold bath and a brown-red suspension is obtained after 30 hours. After filtering off insolubles, the dark red filtrate is stored at -20 ° C for three days, whereby 908 mg (14%) of an orange-red powder can be isolated.
  • the remaining solution is evaporated to dryness in an oil pump vacuum, and 2.45 g of the zirconocene dichloride (contaminated crude product) can be isolated as a red-brown powder.
  • a suspension of 8.53 g (22.8 mmol) of the dilithium salt in 150 ml of toluene and 50 ml of diethyl ether is cooled to -78 ° C. and 5.31 g (22.8 mmol) of zirconium tetrachloride are added.
  • the mixture is allowed to warm to room temperature in a cold bath and an orange suspension is obtained after 30 hours.
  • the orange-colored filtrate is concentrated to dryness in an oil pump vacuum and 12.9 g (95%) of the zirconocene dichloride is obtained as a crude product as a yellow powder.
  • a diastereomer can be significantly enriched by extraction with pentane:

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)

Abstract

L'invention concerne des zirconocènes et hafnocènes avec des ligands cyclopentadiényle borylés.
EP96934773A 1995-10-25 1996-10-22 Zirconocenes et hafnocenes avec ligands cyclopentadienyle boryles et procede de production correspondant Withdrawn EP0866795A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19539650A DE19539650A1 (de) 1995-10-25 1995-10-25 Zirconocene und Hafnocene mit borylierten Cyclopentadienyl-Liganden und das Verfahren zu ihrer Herstellung
DE19539650 1995-10-25
PCT/EP1996/004572 WO1997015581A1 (fr) 1995-10-25 1996-10-22 Zirconocenes et hafnocenes avec ligands cyclopentadienyle boryles et procede de production correspondant

Publications (1)

Publication Number Publication Date
EP0866795A1 true EP0866795A1 (fr) 1998-09-30

Family

ID=7775700

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96934773A Withdrawn EP0866795A1 (fr) 1995-10-25 1996-10-22 Zirconocenes et hafnocenes avec ligands cyclopentadienyle boryles et procede de production correspondant

Country Status (6)

Country Link
US (1) US5962718A (fr)
EP (1) EP0866795A1 (fr)
JP (1) JP2000500435A (fr)
CA (1) CA2235944A1 (fr)
DE (1) DE19539650A1 (fr)
WO (1) WO1997015581A1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19622207A1 (de) 1996-06-03 1997-12-04 Hoechst Ag Chemische Verbindung
US5939503A (en) * 1996-08-09 1999-08-17 California Institute Of Technology Group IV zwitterion ansa metallocene (ZAM) catalysts for α-olefin polymerization
ES2205876T3 (es) * 1998-10-08 2004-05-01 The Dow Chemical Company Complejos metalicos puenteados.
DE19858016A1 (de) 1998-12-16 2000-06-21 Basf Ag Neue Metallocenkomplexe
WO2000075146A1 (fr) * 1999-06-04 2000-12-14 The Dow Chemical Company Cyclopentadienes a substitution bore et complexes de metaux de ces derniers
US20030096926A1 (en) * 2000-03-14 2003-05-22 Toru Arai Transition metal catalyst component for polymerization and process for producing polymer with the same
US6891004B2 (en) 2000-03-14 2005-05-10 Denki Kagaku Kogyo Kabushiki Kaisha Transition metal catalyst component for polymerization, and method for producing a polymer by means thereof
DE10114345A1 (de) * 2001-03-23 2002-09-26 Bayer Ag Katalysator mit einer Donor-Akzeptor-Wechselwirkung
JP2002332307A (ja) * 2001-05-10 2002-11-22 Denki Kagaku Kogyo Kk 重合用遷移金属触媒成分、それを用いた重合体の製造方法
WO2003014166A1 (fr) * 2001-08-07 2003-02-20 Denki Kagaku Kogyo Kabushiki Kaisha Procede de fabrication de polymeres
US10005858B2 (en) 2014-09-10 2018-06-26 Sabic Global Technologies B.V. Boron-bridged 2-indenyl metallocene complexes for olefin polymerization
US11186601B2 (en) 2018-08-29 2021-11-30 Exxonmobil Chemical Patents Inc. Metallocene compounds having appended Lewis acids and polymerization therewith

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL85097A (en) * 1987-01-30 1992-02-16 Exxon Chemical Patents Inc Catalysts based on derivatives of a bis(cyclopentadienyl)group ivb metal compound,their preparation and their use in polymerization processes
US5262498A (en) * 1991-01-12 1993-11-16 Hoechst Aktiengesellschaft Metallocene (co)polymers, process for their preparation and their use as catalysts
US5169818A (en) * 1991-01-12 1992-12-08 Hoechst Aktiengesellschaft Metallocene (co)polymers, process for their preparation and their use as catalysts
US5468889A (en) * 1994-06-20 1995-11-21 The University Of Toledo Boryl zirconocene organic 1,1-dimetallic compounds

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9715581A1 *

Also Published As

Publication number Publication date
US5962718A (en) 1999-10-05
JP2000500435A (ja) 2000-01-18
CA2235944A1 (fr) 1997-05-01
DE19539650A1 (de) 1997-04-30
WO1997015581A1 (fr) 1997-05-01

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