926230-89-9

Upstream product

• 1613543-70-6 2,4-dichlorido-6-((2-(dimethylamino)ethylimino)methyl)phenol 
• 90-60-8 3,5-dichlorosalicyclaldehyde 
• 50-00-0 formaldehyd 
• 108-00-9 N,N-dimethylethylenediamine 
• 120-83-2 2,4-dichlorophenol 

Downstream Products

• 1593874-57-7 2-[[[[3,5-bis-chloro-2-hydroxyphenyl]methyl][2-(dimethylamino)ethyl]amino]methyl]-4,6-dimethylphenol 
• 1593874-56-6 2-[[[[3,5-bis-chloro-2-hydroxyphenyl]methyl][2-(dimethylamino)ethyl]amino]methyl]-4,6-di-tert-butylphenol 
• 1613543-94-4 C₄₀H₅₀Cl₂N₂O₂Zr 
• 1613543-78-4 C₅₄H₇₀Cl₄N₄O₄ 
• 1613543-85-3 C₃₃H₄₄Cl₂N₂O₂ 

Relevant academic research and scientific papers

Bimetallic zirconium amine bis(phenolate) polymerization catalysts: Enhanced activity and tacticity control for polyolefin synthesis

Binucleating multidentate amine bis(phenolate) ligands with rigid terphenyl backbones were designed to support two zirconium centers locked in close proximity. Polymerizations of propylene or 1-hexene with the synthesized bimetallic precatalysts resulted in polymers with significantly higher isotacticity (up to 79% mmmm) in comparison to the stereoirregular polymers produced with previously reported Cs-symmetric monometallic analogues. The bimetallic precatalysts also display higher activity (up to 124 kg of poly(1-hexene) (mmol of Zr)-1 h-1), in comparison to the monometallic analogues, and among the highest activities reported for nonmetallocene catalysts. The stereocontrol is consistent with a bimetallic mechanism involving remote steric interactions with the ligand sphere of the second metal center.

New diamino-diheterophenol ligands coordinate iron(iii) to make structural and functional models of protocatechuate 3,4-dioxygenase

Three diamino, dihetero-phenol ligands were synthesized by sequential Mannich condensations. These ligands were combined with FeCl3 to produce three five-coordinate Fe(iii) complexes that are structural models for the enzyme 3,4-PCD. The three