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Sulfuric Acid Immobilized on Silica Gel as Highly Efficient and Heterogeneous Catalyst for the One Pot Synthesis of 2,4,5 Triaryl 1H imidazoles

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Figure

Table 1, Maximum yield was obtained (94%) when the reaction was loaded with 0.01 gr of the catalyst at the 110˚C
Table 1. Optimization one-pot synthesis of trisubstituted imidazoles under classical heating conditionsa
Table 2. Synthesis of 2,4,5-triaryl-1H-imidazoles (2a-l) using H2SO4·SiO2 (0.01 gr) under solvent-free conditions

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