Benzene, 1-chloro-4-fluoro- → 1-Benzhydryl-3-(4-chlorophenoxy)azetane

Participants

Reaction Conditions

Reaction Steps

A stirred slurry of 41.3 g (1.03 mole) of 60% sodium hydride (in mineral oil) in 500 ml of dry dimethylformamide under nitrogen atmosphere was heated to 50° C. and 22.5 g (0.94 mole) of 1-diphenylmethyl-3-azetidinol in 700 ml of dry dimethylformamide was added dropwise at a rate which maintained the temperature between 70°-80° C. and allowed a gentle evolution of hydrogen. After the addition was complete, the reaction mixture was stirred for 2 hr at 90° C., then 125 g (0.94 mole) of 1-chloro-4-fluorobenzene was added dropwise. The reaction mixture was stirred at 90° C. under nitrogen for 24 hr, then stirred an additional 24 hr while the reaction mixture cooled to ambient temperature. The reaction mixture was poured into 6 liter of ice water and the solid which formed was collected by filtration to yield 271 g of wet crude product. A sample was recrystallized for elemental analysis from ethanol, yielding a fine tan crystalline product in 82.4% yield, m.p. 113°-114° C.

Provenance & Evidence