The catalytic activity of Palladium(II) complexes containing PN ligands in the Heck and Suzuki C-C coupling reactions

Abstract

A range of iminophosphine (PN) ligands ((C₆H₅)₂P-C₆H₄-CH=NR (R=-C₆H₃(2-CH₃)(4-OH) (1a), -CH₂CH₂C₆H₄(4-OH) (1b) and -C₅H₃N(2-CH₃) (1c))  have been synthesized starting from 4-amino-3-methylphenol, 4-(2-aminoethyl)phenol and 2-amino-3-methylpyridine with 2-(diphenylphosphino)benzaldehyde. The PN ligands were reacted with Pd(cod)Cl₂ to give corresponding new PdLCl₂ metal complexes, (2a, 2b and 2c). The Heck and Suzuki C-C coupling reactions were examined with catalysts 2a-2c and showed high conversions under the determined conditions with para substituted arylhalides

Keywords

• iminophosphine,palladium complexes,Heck coupling,suzuki coupling

References

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