912675-91-3

Upstream product

• 887748-93-8 2-(dihydroxyboryl}-3,4-dimethyl-2-cyclopentene-1-one 
• 615-36-1 2-bromoaniline 

Downstream Products

• 922144-00-1 (C₆H₁₁)2PNHC₆H₄C₅H₂(CH₃)3 
• 922143-96-2 (C₆H₅)2PNHC₆H₄C₅H₂(CH₃)3 
• 912676-03-0 4-methyl-N-[2-(2,4,5-trimethyl-cyclopenta-1,4-dienyl)-phenyl]-benzenesulfonamide 
• 922143-98-4 (CH(CH₃)2)2PNHC₆H₄C₅H₂(CH₃)3 
• 912675-97-9 2-(2,4,5-trimethyl-cyclopenta-1,4-dienyl)-phenylamine 

Relevant academic research and scientific papers

Synthesis and structures of o-phenylene-bridged Cp/phosphinoamide titanium complexes

Addition of R′2PCl to anilines substituted with di- or trimethylcyclopentadienyl unit at ortho-position affords ortho-phenylene-bridged Me2Cp or Me3Cp/phosophinoamide ligands, 2-(RMe2C5H2)C

Transition metal complexes, catalyst compositions containing the same, and olefin polymerization using the catalyst compositions

Provided are a novel transition metal complex where a monocyclopentadienyl ligand to which an amido or alcoxy group is introduced is coordinated, a method of synthesizing the same, and olefin polymerization using the transition metal complex. Compared to

Transition metal complexes, catalyst compositions containing the same, and olefin polymerization using the catalyst compositions

Provided are a novel transition metal complex where a monocyclopentadienyl ligand to which an amine-based group is introduced is coordinated, a method of synthesizing the same, and olefin polymerization using the transition metal complex In the novel tran

O-Phenylene-bridged Cp/sulfonamido titanium complexes for ethylene/1-octene copolymerization

The Suzuki-coupling reaction of 2-(dihydroxyboryl)-3,4-dimethyl-2- cyclopenten-1-one (1) and 2-(dihydroxyboryl)-3-methyl-2-cyclopenten-1-one (2) with 2-bromoaniline derivatives affords cyclopentenone compounds (3-8) from which cyclopentadiene compounds, 4,6-R′2-2-(2,5-Me 2C5H3)C6H2NH2 (9-11) and 4,6-R′2-2-(2,3,5-Me3C5H 2)C6H2NH2 (12-14) are prepared. After sulfonation of the -NH2 group with p-TsCl, metallation is carried out by successive addition of Ti(NMe2)4 and Me2SiCl2 affording o-phenylene-bridged Cp/sulfonamido titanium dichloride complexes, [4,6-R′2-2-(2,5-Me 2C5H2)C6H2NSO 2C6H4CH3)]TiCl2 (R′ = H, 21; R′ = Me, 22; R′ = F, 23) and [4,6-R′2-2- (2,3,5-Me3C5H)C6H2NSO 2C6H4CH3)]TiCl2 (R′ = H, 24; R′ = Me, 25; R′ = F, 26). The molecular structures of 24 and [2-(2,5-Me2C5H2)C6H 4NSO2C6H4CH3)]Ti(NMe 2)2 (27) are determined by X-ray crystallography. The Cp(centroid)-Ti-N angle in 24 is smaller (100.90°) than that observed for the CGC (constrained-geometry catalyst), [Me2Si(η5- Me4Cp)(NtBu)]TiCl2 (107.6°) indicating a more "constrained feature" in 24 than in the CGC. Complex 24 shows the highest activity among the newly prepared complexes in ethylene/1-octene copolymerization but it is slightly inferior to the CGC in terms of activity, comonomer-incorporation ability, and molecular weight of the obtained polymers. The Royal Society of Chemistry 2006.