. Hz, The 2,4,5-tri-arylation product 30c was also isolated in 34% yield (0.269 g): 1 H NMR (400 MHz, CDCl 3 ) ? 8, 1H), 7.84 (s, 2H), 7.64 (s, 1H)

2. Hz, 06 (s, 2H) 13 C NMR (100 MHz, CDCl 3 ) ? 139

. Mhz, CDCl 3 ) ? 7, p.27

J. J. Li and G. W. Gribble, 26 (s, 3H), 2.25 (s, 3H) 13 C NMR (100 MHz, CDCl 3 ) ? 138.7, 138, Palladium in Heterocyclic Chemistry, pp.77-82, 2000.

A. D. Yamaguchi, K. Itami, J. Wencel-delord, F. Glorius, S. I. Kuzhushkov et al., C???H Bond Functionalization: Emerging Synthetic Tools for Natural Products and Pharmaceuticals, Angewandte Chemie International Edition, vol.12, issue.36, pp.8960-9009, 2012.
DOI : 10.1002/anie.201201666

S. Pivsa-art, T. Satoh, Y. Kawamura, M. Miura, M. Nomura et al., 5-diarylations of imidazoles in the presence of CuI: (a), Bull. Chem. Soc. Jpn, vol.2, issue.71, pp.467-473, 1998.

F. Shibahara, E. Yamaguchi, T. Murai, and F. Shibahara, Direct multiple C???H bond arylation reaction of heteroarenes catalyzed by cationic palladium complex bearing 1,10-phenanthroline, Chemical Communications, vol.72, issue.14, pp.2471-2473, 2010.
DOI : 10.1039/b920794e

J. Roger and H. Doucet, Phosphine-free palladium-catalysed direct 5-arylation of imidazole derivatives at low catalyst loading, Tetrahedron, vol.65, issue.47, pp.9772-9781, 2009.
DOI : 10.1016/j.tet.2009.09.084
URL : https://hal.archives-ouvertes.fr/hal-00448510