Ethyl 4-piperidinecarboxylate → Ethyl 1-(2,5-difluoro-4-methoxyphenyl)piperidine-4-carboxylate

Participants

Reaction Steps

Production Example 9 was repeated except that 5-bromo-2-methoxytoluene and 1-(2-phenethyl)piperazine were replaced with 4-bromo-2,5-difluoroanisole (4.460 g) and ethyl isonipecotate (3.70 mL), respectively. The resulting crude product was purified on silica gel column chromatography (eluent, hexane: ethyl acetate=6:1) to provide ethyl 1-(2,5-difluoro-4-methoxyphenyl)piperidine-4-carboxylate (2.465 g).

Provenance & Evidence