Category: 880652-93-7

Nikulin, M. V. published the artcilePalladium-catalyzed arylation of bis(4-bromo-2-methylinden-1-yl)dimethylsilane and related compounds, Recommanded Product: 7-Bromo-2-methyl-1H-indene, the main research area is palladium catalyst arylation bromomethylindenyl dimethylsilane zirconocene.

A new procedure was developed for the synthesis of a broad range of ansa-zirconocenes containing bis(2-methyl-4-arylindenyl)dimethylsilane ligands. The method is based on the palladium-catalyzed reaction of halogen-substituted bis(indenyl)dimethylsilanes with various organozinc compounds The aryl-substituted bridging ligands thus prepared serve as the starting compounds for the synthesis of ansa-zirconocenes, which can be used as components of promising catalysts for propylene polymerization

Russian Chemical Bulletin published new progress about Arylation catalysts. 880652-93-7 belongs to class bromides-buliding-blocks, name is 7-Bromo-2-methyl-1H-indene, and the molecular formula is C10H9Br, Recommanded Product: 7-Bromo-2-methyl-1H-indene.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Kulyabin, Pavel S. published the artcileMultisubstituted C2-symmetric ansa-metallocenes bearing nitrogen heterocycles: influence of substituents on catalytic properties in propylene polymerization at higher temperatures, SDS of cas: 880652-93-7, the main research area is ansa zirconocene carbazolyl preparation stereoisomer catalyst propylene polymerization; Buchwald Hartwig amination preparation carbazolyl ansa zirconocene polymerization catalyst; electrophilic amination cyclization preparation carbazolyl ansa zirconocene polymerization catalyst.

In this work we systematically studied the effects of modifications of substituents on the performance of the isospecific zirconocene-based catalyst family, Me2Si(2-Alk-4-(N-carbazolyl)Ind)ZrX2 (X = Cl, Me), wherein the progenitor was shown to be particularly suitable in high-temperature propylene polymerization processes. In order to obtain the required zirconocenes, we developed a novel synthetic pathway to 4-(N-carbazolyl)indenes through Pd-catalyzed cyclizations of 2,2′-dibromobiaryls with 4-aminoindenes, which were synthesized via Buchwald-Hartwig reaction or electrophilic amination of 4-indenyl Grignard reagents with trimethylsilylmethyl azide. By a number of examples, the anion-promoted rac-to-meso isomerization method was shown to work reliably well for preparation of rac-ZrMe2-complexes. Certain zirconocenes among the 21 tested in propylene polymerization at 70-100° under MAO or borate activation outperformed the parent catalyst in mol. weight capability, regio- or stereoselectivity.

Dalton Transactions published new progress about Aluminoxanes, Me Role: CAT (Catalyst Use), USES (Uses) (MAO). 880652-93-7 belongs to class bromides-buliding-blocks, name is 7-Bromo-2-methyl-1H-indene, and the molecular formula is C10H9Br, SDS of cas: 880652-93-7.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Tsarev, A. A. published the artcileTitanium and zirconium complexes with η5:η1-4-(alkyl/arylamino)(dimethyl)silylindene ligands as catalysts for ethene polymerization, Safety of 7-Bromo-2-methyl-1H-indene, the main research area is titanium zirconium complex catalyst polyethylene polymerization.

First members of a novel family of constrained geometry complexes of titanium and zirconium containing a short bridge between the amide and inden-4-yl fragments were obtained. When activated with methylaluminoxane, these complexes can be used as highly active catalysts for ethene polymerization producing high-mol.-weight polymers.

Russian Chemical Bulletin published new progress about Aluminoxanes, Me Role: CAT (Catalyst Use), USES (Uses). 880652-93-7 belongs to class bromides-buliding-blocks, name is 7-Bromo-2-methyl-1H-indene, and the molecular formula is C10H9Br, Safety of 7-Bromo-2-methyl-1H-indene.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Izmer, Vyatcheslav V. published the artcilePalladium-Catalyzed Pathways to Aryl-Substituted Indenes: Efficient Synthesis of Ligands and the Respective ansa-Zirconocenes, SDS of cas: 880652-93-7, the main research area is Pd catalyzed coupling reaction bromoindene aryl halide; crystal structure bisindenylsilyl bridging chiral ansazirconocene methoxyindenylboronic acid; mol structure bisindenylsilyl bridging chiral ansazirconocene methoxyindenylboronic acid; indenylboronic acid Suzuki coupling aryl halide.

Substituted 4-/7-halo-1H-indenes and 5-methyl-3-bromo-4-/6H-cyclopenta[b]thiophenes are convenient starting materials for Suzuki-Miyaura, Negishi, and Murahashi protocols to give the corresponding aryl-substituted indenes and cyclopenta[b]thiophenes of importance for further synthesis of ansa-metallocenes. Alternatively, (2-methyl-1H-inden-4-yl)boronic acid and (1-methoxy-2-methyl-2,3-dihydro-1H-inden-4-yl)boronic acid as well as the resp. organozinc and -Mg reagents can be used for synthesizing aryl-substituted indenes via the Pd-catalyzed reactions with aryl halides. These synthetic methods have a very broad scope to afford libraries of aryl-substituted indenes. Finally, synthesis and structure characterization of several representative chiral ansa-zirconocenes, potentially useful as components of highly active and stereoselective olefin polymerization catalysts, were performed.

Organometallics published new progress about Aryl halides Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 880652-93-7 belongs to class bromides-buliding-blocks, name is 7-Bromo-2-methyl-1H-indene, and the molecular formula is C10H9Br, SDS of cas: 880652-93-7.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary