反应详情

In a similar manner as described for example B3, 300 mg of an isomeric mixture of methyl 3-hydroxy-5-(1H-imidazo[4,5-c]pyridin-1-yl)thiophene-2-carboxylate and methyl 3-hydroxy-5-(3H-imidazo[4,5-c]pyridin-3-yl)thiophene-2-carboxylate (example C1) and 181 mg K2CO3 and 332 mg 1-(1-bromoethyl)-2-(trifluoromethyl)benzene in 5 ml N,N-dimethylformamide yield methyl 5-(1H-imidazo[4,5-c]pyridin-1-yl)-3-{1-[2-(trifluoromethyl)phenyl]ethoxy}thiophene-2-carboxylate and methyl 5-(3H-imidazo[4,5-c]pyridin-3-yl)-3-{1-[2-(trifluoromethyl)phenyl]ethoxy}thiophene-2-carboxylate.