反应详情

To 2-[[5-ethyl-3-[2'-(1H-tetrazol-5-yl)biphenyl-4-yl]methyl-1,3,4-thiadiazolin-2-yliden]aminocarbonyl]-1-cyclopentenecarboxylic acid (206 mg) were added a 0.05N potassium hydroxide in ethanol solution (8.3 ml) and ethanol (50 ml) to dissolve the former in the latter. The solvent was then distilled off. To the residue was added ethanol. The solid so precipitated was collected by filtration and then dried, whereby 180 mg of the title compound was obtained. IR(KBr)cm1 : 1680(--COOH), 1570(=N--CO--)

1. dissolutionto dissolve the former in the latter
2. distillationThe solvent was then distilled off
3. additionTo the residue was added ethanol
4. customThe solid so precipitated
5. filtrationwas collected by filtration
6. customdried