METHOD FOR PRODUCING enantiomeric enrichment η2-IMINOATSILNYH NEOMENTILZAMESCHENNYH complexes with chiral centers in the Zr

摘要

A process for preparing enantiomerically enriched new cyclopentadienyl-1-neometil-4,5,6,7-η-chloro tetragidroindeniltsirkony iminoatsilnyh complexes CpCp'ZrC (R) = N (Cy) (Cl) (R = Et, Bu) of the general formula (1a , b), wherein the cyclopentadienyl-1-neomentil-4,5,6,7-tetragidroindeniltsirkony dichloride (π-complex) is reacted with an alkyl derivative of lithium (RLi, where R = Et, n-Bu) in a molar ratio π -complex: RLi = 1: (0.8-1.3) in an argon atmosphere, cooled to -78 ° C, in toluene, followed by raising the temperature to room temperature and adding tsiklogeksilizotsianida (CyCN) in ekvimo flax π-complex to the amount and stirring for 20 min.