反应详情

To a solution of 5-chloro-1,3-thiazol-2-amine hydrochloride (1.15 g, 6.7 mmol, 3 eq) in pyridine (7.5 ml) was added methyl 4-(chlorosulfonyl)-2-cyanobenzoate (Preparation 20, 580 mg, 2.2 mmol, 1 eq) portionwise and the reaction mixture was stirred at room temperature for 1 hour. The mixture was slowly added to 6M HCl (40 ml) and the resulting precipitate was collected by filtration and triturated with MeOH to yield the title compound as a brown solid (138 mg, 0.38 mmol, 17%).

1. filtrationthe resulting precipitate was collected by filtration
2. customtriturated with MeOH