[1] Biginelli, P., Gazz. Chim. Ital., 23, 360 (1893).
[2] Kappe, C.O., Tetrahedron, 49, 6937 (1993).
[3] (a)Atwal, K.S., Swanson, B.N., Unger, S.E., Floyd, D.M., Moreland, S., Hedberg, A., O’Reilly, B.C., J. Med. Chem., 34,806 (1991). (b) Rovnyak, G.C., Kimball, S.D., Beyer, B., Cucinotta, G., DiMarco, J.D., Gougoutas, J.Z., Hedberg, A., Malley, M.F., McCarthy, J.P., Zhang, R., Moreland, S., J. Med. Chem., 38, 119 (1995).
[4] Kumar, K.A., Kasthuraiah, M., Reddy, C.S., Reddy, C.D., Tetrahedron Lett., 42, 7873 (2001).
[5] Ranu, B.C., Hajra, A., Jana, U., J. Org. Chem., 65, 6270 (2000).
[6] Reddy, Ch.V., Mahesh, M., Raju, P.V.K., Babu, T.R., Reddy, V.N., Tetrahedron Lett., 43, 2657 (2002).
[7] Yadav, J.S., Reddy, B.V.S., Srinivas, R., Venugopal, C., Ramalingam, T., Synthesis, 1341 (2001).
[8] Paraskar, A. S., Dewkar, G. K., Sudalai, A., Tetra-hedron Lett., 44, 3305 (2003).
[9] Fu, N.Y., Yuan, Y.F., Cao, Z., Wang, S.W., Tetra-hedron, 58, 4801 (2002).
[10] Tu, S., Fang, F., Zhu, S., Li, T., Zhang, X., Zhuang, Q., Synlett, 537 (2004).
[11] Xia, M., Wang, Y. G., Tetrahedron Lett., 43, 7703 (2002).
[12] Bose, D. S., Fatima, L., Mereyala, H. B., J. Org. Chem., 68, 587 (2003).
[13] Dondoni, A.,Massi, A., Tetrahedron Lett., 42, 7975 (2001).
[14] Ma, Y., Qian, C., Wang, L., Yang, M., J.Org. Chem., 65, 3864 (2000).
[15] Shaabani, A., Bazgir, A., Teimouri, F., Tetrahedron Lett.,44, 857 (2003).
[16] Peng, J., Deng, Y., Tetrahedron Lett.,42, 5917 (2001).
[17] Bigi, F., Carloni, S., Frullanti, B., Maggi, R., Sartori, G., Tetrahedron Lett., 40, 3465 (1999).
[18] Yadav, J. S., Reddy, B. V. S., Reddy, E. J., Rama-lingam, T., J. Chem. Research(S), 354 (2000).
[19] Kappe, C.O., Kumar, D., Varma, R.S., Synthesis, 1799 (1999).
[20] Stadler, A., Kappe, C.O., J. Chem. Soc. Perkin Trans., 2, 1363 (2000).
[21] Stefani, H. A., Gatti, P. M., Synth. Commun., 30, 2165 (2000).
[22] Yadav, J.S., Reddy, B.V.S., Reddy, K.B., Raj, K.S., Prasad, A.R., J. Chem. Soc. Perkin Trans. 1, 1939 (2001).
[23] Li, J.T., Han, J. F., Yang, J., Li, T. S., Ultrason. Sonochem., 10, 119 (2003).
[24] Shaabani, A., Bazgir, A., Bijanzade, H.R., Mol. Div., 8, 141 (2004).
[25] Shaabani, A., Bazgir, A., Tetrahedron Lett., 45, 2575 (2004).
[26] Pearson, R.G., Inorg. Chem., 27, 734 (1988).
[27] Eynde, J.J.V., Audiart, N., Canonne, V., Michel, S., Haverbeke, Y.V., Kappe, C.O., Heterocycles, 45, 1967 (1997).
[28] Hu, E.H., Sidler, D.R., Dolling, U.H., J. Org. Chem., 63, 3454 (1998).
[29] Lu, J., Bai, Y., Wang, Z., Yang, B., Ma, H., Tetra-hedron Lett., 41, 9075 (2000).