Tris[tri(2-thienyl)phosphine]palladium as the catalyst precursor for thiophene-based Suzuki-Miyaura crosscoupling and polycondensation

Zero-valent palladium complex, Pd(PTh3)3, with three tri(2-thienyl)phosphine ligands was prepared and characterized. Pd(PTh3)3 is superior to Pd(PPh3)4 in catalyzing Suzuki-Miyaura coupling and polymerization of thiophene-based derivatives. The Suzuki polycondensation of 3-hexyl-5-iodothiophene-2-boronic pinacol ester with Pd(PTh3)3 as the catalyst precursor afforded high-molecular-weight P3HT with high regularity and yield. © 2008 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 46: 4556–4563, 2008

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