Syntheses of Analgesics. XXI
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ansa-Metallocene derivatives XXI *. Syntheses of etheno-bridged ansa-titanocene derivatives by the McMurry reaction
207 Novel olefin-linked biscylopentadienylligands have been prepared by McMurry coupling reactions of benzoyland acetyl-cyclopentadienyl sodium. Reactions of the disodium salts with TiC1 4 or TiCl 3 • 3THF afford the alkene-bridged ansa-titanocene dichlorides. 13C-NMR shifts of the bridge carbon atoms do not indicate any interaction between the olefin 'IT-system and the metal.
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ژورنال
عنوان ژورنال: YAKUGAKU ZASSHI
سال: 1959
ISSN: 0031-6903,1347-5231
DOI: 10.1248/yakushi1947.79.2_167