反应详情

In trifluoroacetic acid (3.1 mL) and water (0.3 mL) was dissolved 1-[({5′-chloro-4-methyl-6′-[4-(trifluoromethyl)-1-{[2-(trimethylsilyl)ethoxy]methyl}-1H-imidazol-2-yl]-3,3′-bipyridin-6-yl]oxy)methyl}cyclobutanecarboxylic acid (312 mg), and the mixture was allowed to stand at room temperature for 60 hours. The reaction mixture was concentrated under reduced pressure, subjected to azeotropic distillation with acetic acid, isopropyl ether was added to the obtained residue, and the precipitated solid was collected by filtration and dried under reduced pressure to obtain 1-[({5′-chloro-4-methyl-6′-[5-(trifluoromethyl)-1H-imidazol-2-yl]-3,3′-bipyridin-6-yl}oxy)methyl]cyclobutanecarboxylic acid (151 mg).

1. concentrationThe reaction mixture was concentrated under reduced pressure
2. distillationsubjected to azeotropic distillation with acetic acid, isopropyl ether
3. additionwas added to the obtained residue
4. filtrationthe precipitated solid was collected by filtration
5. customdried under reduced pressure