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 → 1-[({5'-chloro-4-methyl-6'-[5-(trifluoromethyl)-1H-imidazol-2-yl]-3,3'-bipyridin-6-yl}oxy)methyl]cyclobutanecarboxylic acid

Participants

Reaction Steps

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).

Provenance & Evidence