[1-(η5-cyclopentadien-1-yl)-1-(η5-2,7-di-tert-butylfluoren-9-yl)-1,1-diphenylmethane]zirconium dichloride synthesis

1synthesis methods

Product Name:[1-(η5-cyclopentadien-1-yl)-1-(η5-2,7-di-tert-butylfluoren-9-yl)-1,1-diphenylmethane]zirconium dichloride
CAS Number:148423-37-4
Molecular formula:C39H34Cl2Zr
Molecular Weight:664.83

10026-11-6 Synthesis

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9H-Fluorene, 9-(2,4-cyclopentadien-1-yldiphenylmethyl)-2,7-bis(1,1-dimethylethyl)-

162024-88-6
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[1-(η5-cyclopentadien-1-yl)-1-(η5-2,7-di-tert-butylfluoren-9-yl)-1,1-diphenylmethane]zirconium dichloride

148423-37-4
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Yield:-

Reaction Conditions:

with n-butyllithium in diethyl ether;hexanebyproducts: LiCl; stirring ligand (in ether) with 2 equiv. BuLi (in hexane) for 8 h at room temp., addn. of 1 equiv. HfCl4, stirring for 3-4 h; depending on soly. of product (not specified): filtration off of LiCl orevapn. and extn. into CH2Cl2 or filtration (Na2SO4) and dissoln. in CH2 Cl2 or PhMe; recrystn. (ether, -25°C or CH2Cl2, -78°C);

References:

Alt, Helmut G.;Zenk, Roland [Journal of Organometallic Chemistry,1996,vol. 522,# 1,p. 39 - 54]