Abstract
Chromium cyclopentadienyl β-diketiminate catalysts have been used to form Ph2PCy from Ph2PY (Y = Cl, PPh2, H) and CyX (X = Br, Cl) substrates. Manganese powder activated by PbX2 or Me3SiCl was used as the stoichiometric reductant. The Cr(III) cyclohexyl intermediate has been synthesized and structurally characterized. The observed variations in catalytic activity have been correlated with the previously observed reactivity differences imparted by modifying the N-aryl substituents on the β-diketiminate ancillary ligand.
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