反应详情

As described for example 112a, 6-(5-methyl-3-pyrimidin-4-yl-isoxazol-4-ylmethoxy)-pyridazine-3-carboxylic acid ethyl ester (616 mg, 1.8 mmol) was converted, instead of 5-[3-(4-chloro-phenyl)-isoxazol-4-ylmethoxy]-pyrazine-2-carboxylic acid methyl ester, to the title compound (520 mg, 92%) which was obtained as a white solid. MS: m/e=312.3 [M−H]−.