Reductive dehydroxy coupling of 2-(hydroxymethyl)indenes to prepare ethano-bridged bis(2-indenyl) ansa-titanocenes

Hasan Palandoken, University of California - Davis
Justin K. Wyatt, University of California - Davis
Shawn R. Hitchcock, University of California - Davis
Marilyn M. Olmstead, University of California - Davis
Michael H. Nantz, University of California - Davis

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Copyright © 1999 Elsevier. The definitive version is available at http://dx.doi.org/10.1016/S0022-328X(99)00024-8.

NOTE: At the time of publication, the author Hasan Palandoken was not yet affiliated with Cal Poly.

Abstract

New examples of ansa-titanocenes derived from 1,2-bis(2-indenyl)ethane have been prepared. The titanium-mediated reductive coupling of 2-(hydroxymethyl)indenes provided a convenient method for substrate dimerization. Alkyl substitution of the indene ring at C(3) improved the regioselectivity of the reductive coupling to provide the ethylene bis(2-indenyl)ansa-ligands in 29–62% yield.