Phenylboronic Acid → Ethyl 1-benzyloxymethyl-5-(3-cyclopropoxy-4-difluoromethoxyphenyl)-2-formyl-4-(6-methoxy-3-pyridylmethyl)-1H-pyrrol-3-carboxylate

Participants

Reaction Steps

Reaction and post treatment were carried out in the same manner as in Reference example 31 except for using 322 mg (0.66 mmol) of ethyl 1-benzyloxymethyl-5-bromo-2-formyl-4-(6-methoxy-3-pyridylmethyl)-1H-pyrrol-3-carboxylate obtained in Reference example 43-(b) in place of 2-chloro-3-iodo-1-(2-trimethylsilylethoxymethyl)-1,5-dihydropyrrolo-[2,3-d]pyridazin-4-one, and using 323 mg (0.96 mmol) of 2-(3-cyclopropoxy-4-difluoromethoxyphenyl)-4,4,5,5-tetramethyl-[1,3,2]dioxaborolane obtained in Reference example 1-(a) in place of phenylboronic acid, respectively, whereby 383 mg of the title compound was obtained as a slightly yellowish oil. (Yield: 96%)

Provenance & Evidence