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Wiley, European Journal of Organic Chemistry, 6(2012), p. 1101-1106, 2012

DOI: 10.1002/ejoc.201101293

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P–C Cross-Coupling Onto Enamides: Versatile Synthesis of α-Enamido Phosphane Derivatives

This paper is available in a repository.
This paper is available in a repository.

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Abstract

We report herein the Pd-catalyzed P-C cross-coupling reaction between enol phosphates and secondary phosphane-borane complexes or phosphane oxides. The reaction was performed under mild conditions, owing to Pd activation of the P-H bonds of the phosphane-boranes (or phosphane oxides) and to the powerful enol phosphate coupling reagents. New useful chiral and achiral α-β- alkenylphosphane derivatives bearing an amido group in the α-position to the P center were obtained in yields up to 70 %. A useful and versatile Pd-catalyzed P-C cross-coupling reaction was applied with success to a range of secondary phosphane-borane or phosphane oxide derivatives and α-amido enol phosphate reagents. The reaction afforded new chiral or achiral tertiary α-enamido phosphane derivatives.