ethyl 1-benzyloxymethyl-5-bromo-2-methoxymethyl-1H-pyrrol-3-carboxylate → Ethyl 1-benzyloxymethyl-5-bromo-2-formyl-1H-pyrrol-3-carboxylate

Participants

Reaction Steps

Reaction and post treatment were carried out in the same manner as in Reference example 15-(f) except for using 895 g (purity: 85.1%, 1.99 mol) of ethyl 1-benzyloxymethyl-5-bromo-2-methoxymethyl-1H-pyrrol-3-carboxylate obtained in Reference example 17-(b) in place of ethyl 5-bromo-2-methoxymethyl-1-(2-trimethylsilylethoxymethyl)-1H-pyrrol-3-carboxylate, whereby 805 g (purity: 86.3%) of the title compound was obtained as a brownish oil. (Yield: 95%)

Provenance & Evidence