5-Benzyl-2-(3-cyclopropylmethoxy-4-difluoromethoxyphenyl)-3-phenyl-1-(2-trimethylsilylethoxymethyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one → 5-Benzyl-2-(3-cyclopropylmethoxy-4-difluoromethoxyphenyl)-3-phenyl-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 4-(b) except for using 328 mg (0.501 mmol) of 5-benzyl-2-(3-cyclopropylmethoxy-4-difluoromethoxyphenyl)-3-phenyl-1-(2-trimethylsilylethoxymethyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one obtained in Example 38-(d) in place of 2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-3-methyl-1,5-bis(2-trimethylsilylethoxymethyl)-1,5-dihydropyrrolo[2,3-d]pyridazin-4-one, whereby 207 mg of the title compound was obtained as a white solid. (81%)

Provenance & Evidence