[1] L.T. An, J.P. Zou, L.L. Zhang, Catal.Commun., 9, 349 (2008).
[2] K. Manabe, Y. Mori, S. Kobayashi,Tetrahedron, 57, 2537 (2001).
[3] M. Shiri, M.A. Zolfigol, Tetrahedron, 65,587 (2009).
[4] M.A. Bigdeli, G. Gholami, E.Sheikhhosseini, Chin. Chem. Lett., 22, 903 (2011).
[5] Y. Han, Y. Chu, J. Mol. Catal. A: Chem.,237, 232 (2005).
[6] A. Do¨mling, Comb. Chem. High Throughput Screening, 1, 1 (1998).
[7] A. Do¨mling, I. Ugi, Angew. Chem., Int. Ed.,39, 3169 (2000).
[8] L. Weber, Drug Discovery Today, 7, 143 (2002).
[9] J. Zhu, H. Bienayme, Eds.; Wiley-VCH:Weinheim, Germany (2005).