Patent ID: 6015916
Filing Date: 2000-01-18
Classification: C07F,C08F,Y10S

Abstract:
A method for synthesizing a Group IV metal complex containing a tetraalkylcyclopentadiene dimethylsilyl amine ligand which comprises:(i) reacting a tetraalkylcyclopentadiene with an alkali metal alkyl and dimethylsilyl chloride and an alkyl amine in the presence of a non-interfering mediumwherein a first reaction mixture is produced which contains a tetraalkylcyclopentadiene silyl amine of Formula I: ##STR10## wherein R and R.sup.2 are the same or different alkyl groups and R.sup.1 is methyl;(ii) reacting said tetraalkylcyclopentadiene silyl amine produced in step (i) with an alkali metal alkyl and a MCl.sub.4.DME complexwherein M is a Group IV metal and DME is dimethoxyethane;wherein said MCl.sub.4.DME complex is slurried in a non-interfering medium; andwherein a second reaction mixture is produced which contains a compound of Formula II: ##STR11## wherein R, R.sup.1, R.sup.2 and M are as defined; and (iii) converting said Formula II compound to a compound of Formula III: ##STR12##