4-Nitro-O-Phenamine Lab Report

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4-nitro-o-phenylenediamine (5 mmol, 0.77 g) in 25 ml ethanol was slowly added to ethanolic solution (25 ml) containing isatin (5 mmol, 0.74 g), followed by the slow addition of 5- bromosalicylaldehyde (5 mmol, 1.00 g) dissolved in 25 ml ethanol. A colored precipitate was obtained on refluxing the solution for 3 h, (cf. Scheme 1) [24]. The precipitate was filtered by suction and washed thoroughly with ethanol. The pure compound was dried in desiccator over anhydrous calcium chloride.
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