4-Bromoanisole → HCID 23326077, compound

Participants

Reaction Conditions

Reaction Steps

To a stirred and refluxing Grignard complex previously prepared starting from 112.2 parts of 1-bromo-4-methoxybenzene, 15 parts of magnesium and 540 parts of tetrahydrofuran was added dropwise a solution of 84 parts of ethyl 4-(4-fluorobenzoyl)-1-piperidinecarboxylate in 360 parts of tetrahydrofuran. Upon completion, stirring was continued for 2 hours at reflux. After cooling to 10° C., the reaction mixture was poured onto a mixture of 300 parts of crushed ice and 40 parts of acetic acid. The whole was stirred for 5 minutes. 360 Parts of methylbenzene were added. The organic layer was separated, dried, filtered and evaporated, yielding 100 parts of ethyl 4-[(4-fluorophenyl)hydroxy(4-methoxyphenyl)-methyl]-1-piperidinecarboxylate as an oily residue (intermediate 10).

Provenance & Evidence