CATALYST FOR TRIMERISATION OF ETHYLENE TO 1-HEXENE, LIGAND FOR PRODUCING CATALYST, METHOD OF PRODUCING CATALYST AND METHOD OF PRODUCING LIGAND Russian patent published in 2012 - IPC B01J31/16 B01J31/22 B01J31/34 B01J37/30 B01J37/04 B01J45/00 C08F4/22 C08F10/00 C07C2/32 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing an ethylene trimerisation catalyst ligand. Described is a method of producing a ligand of a catalyst for trimerisation of ethylene to 1-hexene of general formula: where R is alkyl, R_1-7 is hydrogen and/or alkyl, involving a reaction for synthesis of 2-(alkylthio)alkylamine and 2-(alkylthio)alkylketone or alkylthioalkanal, where the alkyl in the alkylthio substitute is octyl, and the alkyl in alkylamine and alkylketone is CH₃, C₂H₅, in the presence of titanium tetraisopropoxide in toluene medium at temperature of 50-80°C, with subsequent addition of ethanol and tetrahydrofuran, cooling the obtained solution to 2-0°C, subsequent addition of sodium borohydride and hydrochloric acid using the following formula: wherein alkylthioalkanal is selected from a group comprising: 2-(octylthio)-2-methylpropanal, 2-(octylthio)butanal, 2-(octylthio)pentanal, 2-(octylthio)hexanal, 2-(octylthio)heptanal, 2-(octylthio)octanal, 2-(octylthio)nonanal, 2-(octylthio)decanal.

EFFECT: method provides toxic and environmental safety when producing the ligands.

1 tbl, 14 ex