反应详情

温度

-70 °C

N-{5-[2-Bromo-5-(3-dimethylamino-propylsulfamoyl)-thiophen-3-yl]-4-methyl-thiazol-2-yl}-acetamide obtained in Step I as described above (200 mg; 0.42 mmol; 1 eq), is dissolved in anhydrous THF (50 ml). The reaction mixture is cooled to down to −70° C. and put under nitrogen. n-Butyllithium (2.1 ml; 1.6 M; 3.32 mmol; 8 eq) is added dropwise. After 2 h 30, the reaction is complete and is quenched with water. Solvents are evaporated and the resulting mixture is purified by preparative HPLC affording Compound (27) as a brown oil (120 mg; 68%).

1. customis quenched with water
2. customSolvents are evaporated
3. customthe resulting mixture is purified by preparative HPLC