Synthesis of (alkoxymethyl) zirconocene chlorides: stereochemistry of carbon-carbon bond formation in a zirconocene-Wittig rearrangement

SL Buchwald, RB Nielsen, JC Dewan

Index: Buchwald, Stephen L.; Nielsen, Ralph B.; Dewan, John C. Organometallics, 1989 , vol. 8, p. 1593 - 1598

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Citation Number: 21

Abstract

A series of (alkoxymethy1) zirconocene chlorides (1, Cp2Zr (C1) CH20R, Cp=#-C5H5) has been prepared by treatment of Cp2ZrC12 with (alkoxymethy1) lithium reagents. Compound IC, Cp, Zr (C1) CH20CH2C6H5, crystallizes in the orthorhombic space group Pbca, with a= 15.417 (9) A, b= 18.249 (9) A, c= 11.746 (8) A, and 2= 8. The X-ray crystal structure shows that the alkoxymethyl ligand is q2, with a significant Zr-0 interaction. Compounds 1 with R= ...