Bromine → N-(4-(3-(2-chlorobenzoyl)-5-ethylthiophen-2-yl)-5-methyl[1,2,4]triazol-3-ylmethyl)-3-bromoindole-2-carboxamide

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Reaction Steps

N-(4-(3-(2-Chlorobenzoyl)-5-ethylthiophen-2-yl)-5-methyl[1,2,4]triazol-3-ylmethyl)indole-2-carboxamide (1.0 g, Example 14) was dissolved in acetic acid (12 ml). Bromine (0.1 ml) dissolved in acetic acid (1 ml) was dropwise added under water-cooling, and the mixture was stirred for 1 hour. The solvent was evaporated, and an aqueous sodium thiosulfate solution was added. The mixture was extracted with chloroform. The extract was washed with saturated brine, a saturated aqueous sodium hydrogencarbonate solution and saturated brine, and dried over magnesium sulfate. The solvent was evaporated, and the residue was recrystallized from methanol to give 0.36 g of N-(4-(3-(2-chlorobenzoyl)-5-ethylthiophen-2-yl)-5-methyl[1,2,4]triazol-3-ylmethyl)-3-bromoindole-2-carboxamide.

Provenance & Evidence