Patent ID: 7932207

Claim:
A method for preparing a transition metal complex, comprising the steps of: (a) reacting an amine-based compound represented by Formula 1 below with an alkyl lithium and then adding a compound containing a protecting group (—R 0 ) thereto to prepare a compound represented by Formula 2 below; (b) reacting the compound represented by Formula 2 with an alkyl lithium and adding a ketone-based compound represented by Formula 3 below to prepare an amine-based compound represented by Formula 4 below; (c) reacting the compound represented by Formula 4 with n-butyl lithium to prepare a dilithium compound represented by Formula 5 below; and (d) reacting the compound represented by Formula 5 with MCl 4 (M=Ti, Zr, or Hf) and an organic lithium compound to prepare a transition metal complex represented by Formula 6 below: Wherein R 0 is a protecting group; R 1 , R 2 , R 3 , and R 4 are each independently a hydrogen atom; a silyl radical; an alkyl radical having 1 to 20 carbon atoms or an aryl radical having 5 to 20 carbon atoms; an alkenyl radical having 2 to 20 carbon atoms, an alkylaryl radical having 6 to 20 carbon atoms, or an arylalkyl radical having 6 to 20 carbon atoms; or a metalloid radical of a metal belonging to Group 14 of the Periodic Table substituted with a hydrocarbyl having 1 to 20 carbon atoms; at least two of R 1 , R 2 , R 3 , and R 4 may be connected to each other to form an aliphatic ring having 5 to 20 carbon 4 atoms or an aromatic ring having 5 to 20 carbon atoms; at least two of R 1 , R 2 , R 3 , and R 4 may be connected to each other by an alkylidine radical having 1 to 20 4 carbon atoms, containing an alkyl radical having 1 to 20 carbon atoms or an aryl radical having 5 to 20 carbon atoms to form a ring; R 5 , R 6 , R 7 , and R 8 are each independently a hydrogen atom; a halogen radical; or an alkyl radical having 1 to 20 carbon atoms or an aryl radical having 5 to 20 carbon atoms; and at least two of R 5 , R 6 , R 7 , and R 8 may be connected to each other to form an aliphatic ring having 5 to 20 carbon atoms or an aromatic ring having 5 to 20 carbon atoms; R 9 is a hydrogen atom; a branched or linear alkyl radical having 1 to 20 carbon atoms; or an aryl radical having 5 to 20 carbon atoms; R 10 is a hydrogen M is a transition metal belonging to Group 4 of the Periodic Table; and Q 1 and Q 2 are each independently a halogen radical; an alkylamido radical having 1 to 20 carbon atoms, or an arylamido radical having 5 to 20 carbon atoms; an alkyl radical having 1 to 20 carbon atoms, an alkenyl radical having 2 to 20 carbon atoms, an aryl radical having 5 to 20 carbon atoms, an alkylaryl radical having 6 to 20 carbon atoms, or an arylalkyl radical having 6 to 20 carbon atoms; or an alkylidene radical having 1 to 20 carbon atoms.