反应详情

温度

150 °C

A mixture of 5-amino-1-(3-methanesulfonyl-phenyl)-1H-[1,2,3]triazole-4-carboxylic acid ethyl ester (310 mg, 1 mmol), 4-bromo-N-(4-chloro-phenyl)-benzimidoyl chloride (1.2 mmol) and TiCl4 (2 mmol) in anhydrous dichloroethane (5 mL) is heated to 150° C. for 14 h. After cooling down to room temperature, the mixture is diluted with CH2Cl2 (20 mL) and treated with water (30 mL). The solid is collected by filtration and washed with MeOH (5 ml) to provide the crude 5-(4-bromo-phenyl)-6-(4-chloro-phenyl)-3-(3-methanesulfonyl-phenyl)-3,6-dihydro-[1,2,3]triazolo[4,5-d]pyrimidin-7-one as yellow solid which is used for next step without further purification.

1. temperatureAfter cooling down to room temperature
2. filtrationThe solid is collected by filtration
3. washwashed with MeOH (5 ml)