Triethylamine → N-(4-(3-(2-chlorobenzoyl)-5-ethylthiophen-2-yl)-5-methyl[1,2,4]triazol-3-ylmethyl)-N'-(2-chlorophenyl)urea

Participants

Reaction Steps

3-Aminomethyl-4-(3-(2-chlorobenzoyl)-5-ethylthiophen-2-yl)-5-methyl[1,2,4]triazole di-p-toluenesulfonate (7.40 g) was dissolved in dichloroethane (100 ml). 2-Chlorophenyl isocyanate (1.2 ml) and triethylamine (4.2 ml) were added under ice-cooling, and the mixture was stirred for 4 hours. Then, the reaction mixture was washed with water and dried over magnesium sulfate. The solvent was evaporated, and the residue was purified by silica gel column chromatography (developing solvent:chloroform -methanol) to give 4.50 g of N-(4-(3-(2-chlorobenzoyl)-5-ethylthiophen-2-yl)-5-methyl[1,2,4]triazol-3-ylmethyl)-N'-(2-chlorophenyl)urea as an oil.

Provenance & Evidence