Dimethylformamide → 4-[4,4-Bis(4-fluorophenyl)butyl]-2-(methoxymethyl)-1-(trifluoroacetyl)piperazine

Participants

Reaction Steps

To a stirred mixture of 6.05 parts of 2-(methoxymethyl)-1-(trifluoroacetyl)piperazine, 5.25 parts of N,N-diethylethananamine and 36 parts of N,N-dimethylformamide were added 11 parts of 1,1'-(4-iodobutylidene)bis[4-fluorobenzene]. Stirring was continued for 4 hours at 75° C. The reaction mixture was cooled and poured onto 400 parts of water. The product was extracted twice with 140 parts of 1,1'-oxybisethane. The combined extracts were dried, filtered and evaporated, yielding 11.5 parts (94%) of 4-[4,4-bis(4-fluorophenyl)butyl]-2-(methoxymethyl)-1-(trifluoroacetyl)piperazine as a residue (intermediate 60).

Provenance & Evidence