发明授权
US5004820A Preparation of chiral metallocene dihalides 失效
手性茂金属二卤化物的制备

Preparation of chiral metallocene dihalides
摘要:
A process for preparing chiral metallocene dihalides as catalytic agents in improved yields by deprotonation of 1,2-bis(2,3-disubstituted cyclopentadienyl)ethane followed by condensation with hafnium tetrachloride or zirconium tetrachloride.
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