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公开(公告)号：US20220127149A1
公开(公告)日：2022-04-28
申请号：US17505685
申请日：2021-10-20
申请人： ENTEGRIS, INC.
IPC分类号： C01B33/107
摘要： Provided is methodology for the preparation of highly-desired iodosilanes such as H2SiI2 and HSi3, via a reaction of alkylaminosilanes with certain substituted acid iodides. In one embodiment, bis(diethylamino)silane is reacted with benzoyl iodide to provide diiodosilane.
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公开(公告)号：US20240018071A1
公开(公告)日：2024-01-18
申请号：US18220704
申请日：2023-07-11
申请人： ENTEGRIS, INC.
IPC分类号： C07C4/08
CPC分类号： C07C4/08
摘要： The disclosure provides an improved method for preparing monoalkylated cyclopentadiene species in high yield and selectivity. In the process, either a solution of dicyclopentadiene magnesium or a cyclopentadiene magnesium halide is reacted with an alkylating agent in the presence of a modifying agent to provide the monoalkylated product. In the process of the disclosure, only a mono-alkylated species is produced with no detectible amount of dialkylated product observed.
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公开(公告)号：US20240343591A1
公开(公告)日：2024-10-17
申请号：US18752725
申请日：2024-06-24
申请人： ENTEGRIS, INC.
发明人： Scott A. Laneman , Thomas M. Cameron , Thomas H. Baum , David Kuiper , David M. Ermert , Johathan W. Dube
IPC分类号： C01B33/107
CPC分类号： C01B33/107
摘要： Provided are complexes useful in the conversion of chloro- and bromo-silanes to highly desired iodosilanes such as H2SiI2 and HSiI3, via a halide exchange reaction. The species which mediates this reaction is an iodide reactant comprising aluminum.
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公开(公告)号：US11884606B2
公开(公告)日：2024-01-30
申请号：US17988544
申请日：2022-11-16
申请人： ENTEGRIS, INC.
摘要： The disclosure provides methodology for the synthesis of mono-alkylated cyclopentadiene structures, which can be obtained via fulvene intermediates. In one embodiment, the cyclopentadiene ring is substituted with a trialkylsilyl moiety, which enables the further reaction with certain metal halides to form metal adducts. For example, the monoalkyl cyclopentadienes substituted with a trimethylsilyl group can be reacted with TiCl4 to provide R*CpTiCl3 complexes, wherein R* is a group of the formula
wherein R1 and R2 are as defined herein.-
公开(公告)号：US20230167146A1
公开(公告)日：2023-06-01
申请号：US17987642
申请日：2022-11-15
申请人： ENTEGRIS, INC.
IPC分类号： C07F17/00
CPC分类号： C07F17/00
摘要： The disclosure provides a process for preparing bis(monoalkyl-substituted cyclopentadiene) tungsten hydride compounds, for example bis(isopropylcyclopentadienyl)tungsten dihydride, via the corresponding magnesium compound and tungsten hexachloride, followed by treatment with a hydride reagent. Also provided is a process for preparing bis(monoalkyl-substituted cyclopentadiene) metal halide compounds. This latter aspect is achieved by reaction of the corresponding magnesium compound with a metal halide. Exemplary metals in this process include hafnium, zirconium, titanium, tantalum, niobium, tungsten, and molybdenum.
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公开(公告)号：US20230167136A1
公开(公告)日：2023-06-01
申请号：US17988544
申请日：2022-11-16
申请人： ENTEGRIS, INC.
摘要： The disclosure provides methodology for the synthesis of mono-alkylated cyclopentadiene structures, which can be obtained via fulvene intermediates. In one embodiment, the cyclopentadiene ring is substituted with a trialkylsilyl moiety, which enables the further reaction with certain metal halides to form metal adducts. For example, the monoalkyl cyclopentadienes substituted with a trimethylsilyl group can be reacted with TiCl4 to provide R*CpTiCl3 complexes, wherein R* is a group of the formula
wherein R1 and R2 are as defined herein.-
公开(公告)号：US20240067670A1
公开(公告)日：2024-02-29
申请号：US18382002
申请日：2023-10-19
申请人： ENTEGRIS, INC.
IPC分类号： C07F17/00
CPC分类号： C07F17/00
摘要： The disclosure provides a process for preparing bis(monoalkyl-substituted cyclopentadiene) tungsten hydride compounds, for example bis(isopropylcyclo-pentadienyl) tungsten dihydride, via the corresponding magnesium compound and tungsten hexachloride, followed by treatment with a hydride reagent. Also provided is a process for preparing bis(monoalkyl-substituted cyclopentadiene) metal halide compounds. This latter aspect is achieved by reaction of the corresponding magnesium compound with a metal halide. Exemplary metals in this process include hafnium, zirconium, titanium, tantalum, niobium, tungsten, and molybdenum.
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公开(公告)号：US11905174B2
公开(公告)日：2024-02-20
申请号：US17505685
申请日：2021-10-20
申请人： ENTEGRIS, INC.
IPC分类号： C01B33/107
CPC分类号： C01B33/107
摘要： Provided is methodology for the preparation of highly-desired iodosilanes such as H2SiI2 and HSi3, via a reaction of alkylaminosilanes with certain substituted acid iodides. In one embodiment, bis(diethylamino)silane is reacted with benzoyl iodide to provide diiodosilane.
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公开(公告)号：US20240018173A1
公开(公告)日：2024-01-18
申请号：US18219447
申请日：2023-07-07
申请人： ENTEGRIS, INC.
发明人： Adrian Houghton , Scott A. Laneman
IPC分类号： C07F9/40
CPC分类号： C07F9/409
摘要： Provided is a process for the preparation of certain bisphosphonate compounds and their ester derivatives. In this process certain bisphosphonate compounds such as medronic acid is prepared via the reaction of the corresponding isopropyl esters with (i) trimethylsilylbromide or trimethylsilyl iodide, or (ii) trimethylsilyl chloride and an alkali metal iodide or bromide; followed by treatment with a liquid comprising water. The process surprisingly provides the desired compounds, despite having relatively bulky ester groups such as isopropyl on the starting material bisphosphonate ester.
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公开(公告)号：US20240247003A1
公开(公告)日：2024-07-25
申请号：US18412302
申请日：2024-01-12
申请人： ENTEGRIS, INC.
IPC分类号： C07F5/00
CPC分类号： C07F5/00
摘要： Yttrium complexes and related methods are provided. A method for preparing a yttrium complex comprises contacting a metal alkylcyclopentadienyl compound and a yttrium trihalide compound in a non-coordinating solvent, so as to obtain a tris(alkylcyclopentadienyl)yttrium complex. A composition comprises a tris(alkylcyclopentadienyl)yttrium complex.
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