Abstract

[Pd(CH{sub 3}CN){sub 4}][BF{sub 4}]{sub 2} modified with different nitrogen and mono- or bidentate phosphorus ligands catalyzes the formation of (E)-1,5-diphenylpent-1-en-3-one from styrene and carbon monoxide; the use of hybrid ligands, particularly phosphine thioethers, switches the regioselectivity to bring about a largely selective formation of (E)-1,4-diphenylpent-1-en-3-one. 15 refs., 1 tab.

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