反应详情

温度

60 °C

To a stirred solution of 3-methyl-5-[3-(2-quinolinylmethyloxy)benzyloxy]benzo(b)thiophene-2-carboxylic acid (250 mg, 0.55 mmol) in DMSO (6 ml) at room temperature is added 1,1'-carboxyldiimidazole (178 mg, 1.10 mmol) and the resulting solution is stirred at 60° C. for 1 hour. Triethylamine (153 μL, 1.10 mmol) and 5-aminotetrazole monohydrate (113.2 mg, 1.10 mmol) are added successively and the solution stirred at 60° C. for 16 hours. The reaction mixture is cooled to room temperature and poured over ice-water. The pH is adjusted to 10 and the aqueous layer washed with ether. The pH is then adjusted to 3 and the precipitated material obtained by filtration and washing successively with water, ethanol and methylene chloride. Further drying under vacuum affords N-1H-(5-tetrazolyl)-5-[3-(2-quinolinylmethyloxy)benzyloxy ]-3-methylbenzo(b)thiophene-2-carboxamide (M.P. 220-224° C. (dec)).

1. stirringthe solution stirred at 60° C. for 16 hours
2. temperatureThe reaction mixture is cooled to room temperature
3. washthe aqueous layer washed with ether
4. customthe precipitated material obtained by filtration
5. washwashing successively with water, ethanol and methylene chloride
6. customFurther drying under vacuum