LIGANDS AND CATALYTIC SYSTEMS COMPRISING THEREOF FOR OLIGOMERIZATION OF ETHYLENE FOR PREPARING LINEAR ALPHA-OLEFINS Russian patent published in 2007 - IPC C07D401/12 C07F17/00 

FIELD: organic chemistry, polymers, chemical technology, catalysts.

SUBSTANCE: invention relates to ligands, different precursors of catalysts and catalytic systems prepared from these ligands and designated for the oligomerization reaction of ethylene to synthesize linear alpha-olefins with high yield and selectivity. Also, invention relates to a method for synthesis of indicated alpha-olefins, namely, to mixed bis-iminepyridine ligands of the formula (II) given in the invention description wherein indicated atoms form cyclopentadienyl or aryl moiety of π-coordinated metal complex, to mixed complexes of bis-iminepyridine-MX_n comprising ligand of the formula (II) wherein M represents metal atom chosen from Fe or Co; n = 2 or 3; X represents halide atom, (C₁-C₃₀)-hydrocarbon radical optionally comprising one or more functional inert groups comprising heteroatom and chosen from fluoride, chloride, silanes, stannans, ethers and amines, alkoxides, amides or hydrides, to mixed complexes [bis-iminepyridine MYp ^. Ln⁺][NC^-]_q comprising ligand of the formula (II) wherein Y represents ligand that is able to incorporation of olefin; M represents metal atom chosen from Fe or Co; NC^- represents non-coordinated anion; p + q = 2 or 3 in accordance of formal degree of oxidation of indicated metal atom; L represents the Lewis neutral donor molecule; n = 0, 1 or 2, and to a method for synthesis of alpha-olefins from ethylene with using indicated complexes.

EFFECT: valuable properties of ligands and systems.

6 cl, 2 tbl, 4 dwg, 10 ex