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Controlling Regiochemistry in Negishi Carboaluminations. Fine Tuning the Ligand on Zirconium

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journal contribution
posted on 06.12.2006, 00:00 by Bruce H. Lipshutz, Tom Butler, Asher Lower
The species on the zirconocene catalyst is changed from two Cp's to the Brintzinger ligand and catalytic amounts of MAO are used to usually effect a >99% regiocontrol of Negishi carboaluminations of 1-alkynes in toluene.