GROUP 4 METAL COMPLEXES OF THIOPHENE-FUSED CYCLOPENTADIENYL LIGAND DERIVED FROM TETRAHYDROQUINOLINE DERIVATIVES AND OLEFIN POLYMERIZATIONS THEREWITH

摘要

PURPOSE: A novel ligand derived from tetrahydroquinoline derivative and transition metal compound are provided to ensure high activity than unfused catalyst and to obtain a polymer with higher molecular weight. CONSTITUTION: A transition metal compound is denoted by chemical formula 1. A method for preparing the transition metal compound precursor of chemical formula 2 comprises: a step of reacting tetrahydroquinoline derivative of chemical formula 3 with alkyl lithium and adding carbon dioxide to obtain a compound of chemical formula 4; and a step of reacting alkyl lithium with the compound of chemical formula 4 and adding a compound of chemical formula 5.