880652-93-7

Usage

Uses

Used in Chemical Synthesis:
7-Bromo-2-methyl-1H-indene is used as a reactant/reagent for the synthesis of a broad range of ansa-zirconocenes containing bis(2-methyl-4-arylindenyl)dimethylsilane ligands. This synthesis is achieved through a palladium-catalyzed reaction, which allows for the formation of these complex and valuable organometallic compounds.
Used in Organometallic Chemistry:
In the field of organometallic chemistry, 7-bromo-2-methyl-1H-indene serves as a key precursor for the preparation of ansa-zirconocenes. These ansa-zirconocenes are important catalysts in various polymerization reactions, such as olefin polymerization, and are widely used in the production of polymers with specific properties and structures.
Used in Polymer Industry:
7-Bromo-2-methyl-1H-indene indirectly contributes to the polymer industry through its role in the synthesis of ansa-zirconocene catalysts. These catalysts are employed in the production of polymers with tailored characteristics, such as molecular weight, branching, and stereochemistry, which are essential for various applications, including plastics, films, fibers, and coatings.

Upstream product

• 174702-59-1 4-bromo-2-methyl-2,3-dihydro-1H-inden-1-one 
• 869063-68-3 4-bromo-6-chloro-2-methyl-1-indanone 
• 880653-70-3 4-bromo-2-methylindan-1-ol 

Downstream Products

• 1332371-31-9 4-methyl-N-[2-(2-methyl-1H-inden-7-yl)ethyl]benzenesulfonamide 
• 1332371-59-1 N-(4-methylphenyl)-1,1-dimethyl-1-(2-methyl-1H-inden-7-yl)silanamine 
• 1332371-32-0 N,4-dimethyl-N-[2-(2-methyl-1H-inden-7-yl)ethyl]benzenesulfonamide 
• 1332371-35-3 N-isopropyl-4-methyl-N-[2-(2-methyl-1H-inden-7-yl)ethyl]benzenesulfonamide 
• 1332371-55-7 N-(4-methoxyphenyl)-1,1-dimethyl-1-(2-methyl-1H-inden-7-yl)silanamine 
• 1332371-56-8 C₁₉H₂₃NOSi 
• 1332371-57-9 N-(3,5-dimethylphenyl)-1,1-dimethyl-1-(2-methyl-1H-inden-7-yl)silanamine 
• 1332371-61-5 N-(4-bromophenyl)-1,1-dimethyl-1-(2-methyl-1H-inden-7-yl)silanamine 
• 1332371-62-6 N-(4-bromophenyl)-1,1-dimethyl-1-(2-methyl-1H-inden-4-yl)silanamine 
• 1332371-68-2 (4-methylphenyl)-1,1,2,2-tetramethyl-2-(2-methyl-1H-inden-7-yl)disilanylamine 
• 1332371-69-3 C₂₁H₂₉NSi₂ 
• 1332371-71-7 (2-methylphenyl)-1,1,2,2-tetramethyl-2-(2-methyl-1H-inden-7-yl)disilanylamine 
• 1332371-70-6 C₂₁H₂₉NSi₂ 
• 1332371-38-6 N-benzyl-4-methyl-N-[2-(2-methyl-1H-inden-7-yl)ethyl]benzene-sulfonamide 

Relevant academic research and scientific papers

Bridged Metallocene Catalysts

A catalyst comprising a complex of formula (I) wherein M is zirconium or hafnium; each X is a sigma ligand; L is a divalent bridge selected from -R'2C-, -R'2C-CR'2-, -R'2Si-, -R'2Si-SiR'2-,

HALOGEN SUBSTITUTED METALLOCENE COMPOUNDS FOR OLEFIN POLYMERIZATION

A metallocene compound is represented by the formula (1): AMXn-1 wherein M is a transition metal atom having a coordination number of n selected from Group 3, 4, 5 or 6 of the Periodic Table of Elements, or a lanthanide metal atom, or actinide metal atom; A is a substituted monocyclic or polycyclic arenyl ligand pi-bonded to M, wherein said arenyl ligand includes at least one halogen substituent directly bonded to any sp2 carbon atom at a bondable ring position of the ligand; and the or each X is a univalent anionic ligand, or two X are joined and bound to the metal atom to form a metallocycle ring, or two X are joined to form a chelating ligand, a diene ligand, or an alkylidene ligand.

HALOGEN SUBSTITUTED METALLOCENE COMPOUNDS FOR OLEFIN POLYMERIZATION

A metallocene compound is represented by the formula (1): wherein: M is a Group 3, 4, 5 or 6 transition metal atom, or a lanthanide metal atom, or actinide metal atom, preferably a Group 4 transition metal atom selected from titanium, zirconium or hafnium; E is a substituted or unsubstituted monocyclic or polycyclic arenyl ligand pi-bonded to M; A is a substituted or unsubstituted polycyclic arenyl ligand that is pi-bonded to M and has a different ring structure than the E ligand; at least one of the A and E ligands includes at least one halogen substituent directly bonded to an sp2 carbon at a bondable ring position; Y is a bridging group containing at least one Group 13, 14, 15, or 16 element and any single position of the ring structure of A and to any single position of the ring structure of E; and y is zero or 1, indicating the absence (y = 0) or presence (y =1) of Y; and each X is a univalent anionic ligand, or two X are joined and bound to the metal atom to form a metallocycle ring, or two X are joined to form a chelating ligand, a diene ligand, or an alkylidene ligand; provided that when E is an unsubstituted cyclopentadienyl ligand, either y is one or A is not 2-bromofluorenyl or 2,7-dibromofluorenyl.

Halogen substituted metallocene compounds for olefin polymerization

A metallocene compound is represented by the formula (1): wherein: M is a Group 3, 4, 5 or 6 transition metal atom, or a lanthanide metal atom, or actinide metal atom, preferably a Group 4 transition metal atom selected from titanium, zirconium or hafnium; E is a substituted or unsubstituted monocyclic or polycyclic arenyl ligand pi-bonded to M; A is a substituted or unsubstituted polycyclic arenyl ligand that is pi-bonded to M and has a different ring structure than the E ligand; at least one of the A and E ligands includes at least one halogen substituent directly bonded to an sp2 carbon at a bondable ring position; Y is a bridging group containing at least one Group 13, 14, 15, or 16 element and any single position of the ring structure of A and to any single position of the ring structure of E; and y is zero or 1, indicating the absence (y=0) or presence (y=1) of Y; and each X is a univalent anionic ligand, or two X are joined and bound to the metal atom to form a metallocycle ring, or two X are joined to form a chelating ligand, a diene ligand, or an alkylidene ligand; provided that when E is an unsubstituted cyclopentadienyl ligand, either y is one or A is not 2-bromofluorenyl or 2,7-dibromofluorenyl.

Preparation of substituted bridged indenyl and related ligands

A process for preparing a chelating ligand of the formula (II) from a chelating ligand of the formula (I) via an sp2-sp2 or sp2-sp3 coupling reaction with an organometallic compound of the formula (III). wherein