Methanol → HCID 23326057, compound

Participants

Reaction Steps

To a stirred solution of 140.5 parts of 4-[bis(4-fluorophenyl)hydroxymethyl]-1-(phenylmethyl)pyridinium bromide in 640 parts of methanol were added portionwise, during a 2 hours-period, 15.1 parts of sodium borohydride at room temperature (cooling in ice-water was necessary). Upon completion, the whole was stirred and refluxed for 30 minutes. After cooling to room temperature, 800 parts of water were added. The whole was allowed to stand overnight. The reaction mixture was evaporated till all traces of methanol were removed. 1040 Parts of dichloromethane were added. The layers were separated. The organic layer was washed with 200 parts of water, dried, filtered and evaporated. The residue was taken up in dry methylbenzene and the whole was evaporated, yielding 111 parts (94.5%) of α,α-bis(4-fluorophenyl)-1,2,3,6-tetrahydro-1-(phenylmethyl)-4-pyridinemethanol as an oily residue (intermediate 28).

Provenance & Evidence