Research Article
A Simple, Efficient Synthesis of 2-Aryl Benzimidazoles Using Silica Supported Periodic Acid Catalyst and Evaluation of Anticancer Activity
Table 1
Reaction of 1 and 4g under various conditionsa.
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1,2-phenylenediamine 1 mmol, m-nitrobenzaldehyde 1 mmol catalyst (0.20 mmol supported on silica) in ACN. bRoom temperature was 30–35°C. cYields are measured after purification. dH5IO6 which is not supported on silica. |