Solvent-free synthesis of tetrasubstituted imidazoles on silica gel/NaHSO4 support

Clark, 2002, Acc. Chem. Res., 791, 35 Ramesh, 2003, Tetrahedron Lett., 1465, 44 Berton, 1997, J. Org. Chem., 8952, 62 Ramesh, 2003, J. Org. Chem., 8952, 68 Das, 2005, Synthesis, 250 Das, 2005, Synthesis, 1671 Chari, 2005, Catal. Commun., 624, 6 Grimmett, 1980, vol. 27, 241 Grimmett, 1970, vol. 12, 103 Sisko, 1998, J. Org. Chem., 4529, 63 Shilcrat, 1997, J. Org. Chem., 8449, 62 Horne, 1994, Heterocycles, 139, 39 Nunami, 1994, J. Org. Chem., 7635, 59 Lantos, 1993, J. Org. Chem., 7092, 58 Ritter, 1987, J. Org. Chem., 2714, 52 Lee, 1994, Nature, 739, 372 Lee, 1995, Circ. Shock, 97, 44 Azizian, 2005, J. Org. Chem., 350, 70 Azizian, 2005, J. Org. Chem., 1471, 70 Azizian, 2003, Synth. Commun., 415, 33 Azizian, 2005, Synthesis, 1095 Azizian, 2006, Appl. Catal. A, 85, 300 Azizian, 2005, Tetrahedron Lett., 6155, 46 Azizian, 2004, Synthesis, 2263 Azizian, 2004, Heterocycles, 2225, 63 Usyatinsky, 2000, Tetrahedron Lett., 5031, 41 Balalaie, 2003, Tetrahedron Lett., 1709, 44 Wolkenberg, 2004, Org. Lett., 1453, 6 Sparks, 2004, Org. Lett., 2473 Frantz, 2004, Org. Lett., 843, 6 Zhong, 2004, Org. Lett., 929, 6 A. Mjalli, S. Sarshar, US Patent 5,700,826 (1997).