3-Cyclobutoxymethyl-2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-5-(2-trimethylsilylethoxymethyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one → 2-(3-Cyclopropoxy-4-difluoromethoxyphenyl)-3-isobutoxymethyl-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one

Participants

Reaction Steps

Reaction and post treatment were carried out in the same manner as in Example 13-(c) except for using 0.83 g (1.51 mmol) of 2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-isobutoxymethyl-5-(2-trimethylsilylethoxymethyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one obtained in Example 62-(b) in place of 3-cyclobutoxymethyl-2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-5-(2-trimethylsilylethoxymethyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, whereby 402 mg of the title compound was obtained as a white solid. (Yield: 64%)

Provenance & Evidence