1,4-Dioxaspiro[4.5]decan-8-one → 8-(4-Fluorophenyl)-1,4-dioxaspiro[4.5]decan-8-ol

Participants

Reaction Steps

To a solution of 1,4-cyclohexanedione mono-ethylene ketal (25 g, 0.16 mol) in diethylether (750 ml), cooled to −78° C. was added 4-fluorophenyl magnesium bromide (1 M in tetrahydrofuran, 190 ml, 0.19 mol) dropwise. The reaction mixture was warmed to room temperature, quenched with water and extracted twice with ethyl acetate. Washing with brine, drying and solvent evaporation gave 8-(4-fluorophenyl)-1,4-dioxa-spiro[4.5]decan-8-ol (38 g, 95%).

Provenance & Evidence