219838-89-8

Upstream product

• 75-24-1 trimethylaluminum 
• 900816-53-7 2,6-bis(1-methylethyl)-N-[1-(2-pyridinyl)ethylidene]phenylamine 

Downstream Products

• 1031721-71-7 [(κ2-N,N'-C5H4NCMe2N(2,6-diisopropylphenyl))Zr(benzyl)3] 
• 1031217-61-4 [(κ2-N,N'-C5H4NCMe2N(2,6-diisopropylphenyl))Zr(dimethylamido)3] 

Relevant academic research and scientific papers

(Amidomethyl)pyridine zirconium and hafnium complexes: Synthesis and structural characterization

A series of 2-formyl and 2-acetylpyridines was condensed with 2,6-diisopropylaniline to yield the corresponding imines. Their reaction with sodium borohydride gave the respective N-arylaminomethylpyridines. Treatment of the N-arylformimino- or -acetiminopyridines with trimethylaluminum followed by hydrolysis furnished a series of the respective substituted N-arylaminoethylpyridine derivatives. Their reaction with tetrabenzylzirconium or tetrakis(dimethylamido)zirconium or -hafnium gave the corresponding (chelate ligand)MX3 systems in a variety of cases. Some of these gave very active ethene polymerization catalysts upon activation with methylalumoxane. Six of the neutral aminoalkylpyridines were characterized by X-ray diffraction, as were eight of the zirconium or hafnium complexes and two aluminum chelate complex systems.

Catalyst precursor and olefin polymerization processes

Catalyst precursor compounds having both (i) a polydentate ligand which comprises a cyclic moiety as well as a heteroatom and (ii) a protected hydride/hydrocarbyl ligand bonded to a metal atom, as well as olefin polymerization catalyst systems based thereupon, polymerization processes using such catalyst systems and polymers produced thereby.