150096-60-9

Usage

Uses

Given the hazardous nature of 2-Methylbenzo[e]indene, its uses are primarily focused on research and regulatory efforts to understand and control its presence in the environment. However, it is important to note that the compound itself is not intentionally used for any beneficial applications due to its harmful effects. The following are areas where 2-Methylbenzo[e]indene is relevant:
Used in Environmental Research:
2-Methylbenzo[e]indene is used as a subject of study in environmental research to understand its distribution, sources, and impact on air quality. This research is crucial for developing strategies to reduce its emissions and mitigate its effects on human health and the environment.
Used in Regulatory Measures:
2-Methylbenzo[e]indene is used as a reference compound in the development of regulations and control measures aimed at reducing the emissions of hazardous air pollutants from combustion processes, particularly in the transportation and energy sectors.
Used in Public Health Initiatives:
2-Methylbenzo[e]indene is used as a marker for assessing exposure to air pollution and its potential health risks. Public health initiatives may use data on 2-Methylbenzo[e]indene levels to inform policies and interventions aimed at improving air quality and reducing the incidence of respiratory and other health issues associated with exposure to PAHs.

InChI:InChI=1/C14H12/c1-10-8-12-7-6-11-4-2-3-5-13(11)14(12)9-10/h2-8H,9H2,1H3

Upstream product

• 91-20-3 naphthalene 
• 150096-51-8 2-methyl-1,2-dihydro-3H-cyclopenta[a]naphthalen-3-one 
• 150096-57-4 2-methyl-2,3-dihydro-cyclopenta[a]naphthalen-1-one 
• 163801-85-2 2,3-dihydro-1-hydroxy-2-methyl-1H-benz[e]indene 

Downstream Products

• 150096-53-0 dimethyl bis(2-methyl-4,5-benzoindenyl)silane 
• 1243064-10-9 (3-benzyl-1H-inden-1-yl)(2-methylbenz[e]-1H-inden-1-yl)-dimethylsilane 

Relevant academic research and scientific papers

Process for preparing 1-indanones

The present invention relates to a process for preparing 1-indanones of formula I: and isomers thereof, wherein R1, R2, R3, R4, R5, and R6 independently represent H or a C1-C20 hydrocarbon group or R1 and R2 or R2 and R3 or R3 and R4 and/or R5 and R6 together with the carbon atoms to which they are attached form a saturated or unsaturated 5- or 6-membered ring, said hydrocarbon group and/or said ring optionally containing one or more hetero atoms, said ring optionally being substituted with a C1-C4 hydrocarbon group, said process comprising reacting a compound of formula II: wherein R1, R2, R3, R4, R5, and R6 have the same meaning as defined above, with a chlorinating agent, followed by reaction with a Friedel-Crafts catalyst. The invention further relates to the preparation of the corresponding indenes.

Control of stereoerror formation with high-activity "dual-side" zirconocene catalysts: A novel strategy to design the properties of thermoplastic elastic polypropenes

The new C1-symmetric complexes rac-[1-(9-η5-fluorenyl)-2-(2-methylbenz[e]-1-η 5-indenyl)ethane]-zirconium dichloride (14a), rac-[1-(9-η5-fluorenyl)-2-(4,5-cyclohexa-2-methyl-1-η 5-indenyl)ethane]zirconium dichloride (14b), and rac-[1-(9-η5-fluorenyl)-2-(5,6-cyclopenta-2-methyl-l-η 5-indenyl)ethane]zirconium dichloride (15) were prepared in up to 93% yield. These compounds, activated with methyl aluminoxane, exhibit high active propene polymerization rates which remain constant over hours, even at elevated polymerization temperatures of 50 and 70°C. The two different coordination sites of these "dual-side" catalysts lead to isotactic polypropenes with variable amounts of stereoerrors, depending on the monomer concentration. The 2-methyl substituent of the indenyl ligands results, at the same time, in significantly increased molecular weights of the polymer products (up to 2.3 × 105 g mol-1), the bulk properties of which can be adjusted from flexible, semicrystalline thermoplastic to excellent thermoplastic elastic.

Production of bridged metallocene complexes and intermediates therefor

Bridged metallocene compounds are produced by a process of promising commercial utility for plant-sized operations. One of the key steps of the process involves converting a deprotonated silicon-, germanium- or tin-containing ligand into the metallocene. Preferably, and in accordance with an embodiment of the invention, this is accomplished to great advantage by adding a diamine adduct of a Group IV, V, or VI metal tetrahalide to a solution or slurry formed from a deprotonated silicon-, germanium- or tin-containing ligand and an organic liquid medium so as to form a metallocene. The overall process of the invention involves the direct conversion of benzoindanones to benzoindanols which, without isolation, are converted to benzoindenes. Thereupon the benzoindenes are bridged by deprotonating the benzoindenes with a strong base such as butyllithium and reacting the resultant deprotonated product with a suitable silicon-, germanium- or tin-containing bridging reactant such as dichlorodimethylsilane. The resultant bridged product is deprotonated with a strong base such as butyllithium and reacted with a suitable Group IV, V, or VI metal-containing reactant such as ZrCl4 to provide a silicon-, germanium- or tin-bridged Group IV, V, or VI metal complex, such as a dihydrocarbylsilyl-bridged zirconocene complex.

Production of bridged metallocene complexes and intermediates therefor

Bridged metallocene compounds are produced by a process of promising commercial utility for plant-sized operations. The overall process involves the direct conversion of benzoindanones to benzoindanols which, without isolation, are converted to benzoindenes. Thereupon the benzoindenes are bridged by deprotonating the benzoindenes with a strong base such as butyllithium and reacting the resultant deprotonated product with a suitable silicon-, germanium- or tin-containing bridging reactant such as dichlorodimethylsilane. The resultant bridged product is deprotonated with a strong base such as butyllithium and reacted with a suitable Group IV, V, or VI metal-containing reactant such as ZrCl4 to provide a silicon-, germanium- or tin-bridged Group IV, V, or VI metal complex, such as a dihydrocarbylsilyl-bridged zirconocene complex. The initial benzoindenones used in such sequence can be formed readily and in high yield by reaction of a 2-haloacyl halide with naphthalenes unsubstituted in at least the 1- and 2-positions.

Process for preparing cyclopentadienyl group-containing silicon compound or cyclopentadienyl group-containing germanium compound

Disclosed is a process for preparing a cyclopentadienyl group-containing silicon compound or a cyclopentadienyl group-containing germanium compound, comprising reacting (i) a lithium, sodium or potassium salt of a cyclopentadiene derivative with (ii) a silicon halide compound or a germanium halide compound in the presence of a cyanide or a thiocyanate. The cyanide or the thiocyanate is preferably a copper salt. According to the process of the invention, a cyclopentadienyl group-containing silicon compound or a cyclopentadienyl group-containing germanium compound, which is very useful for the preparation of a metallocene complex catalyst component, can be prepared in a high yield for a short period of time.