Triethylamine → 4-(4-Fluorobenzoyl)-1-(4-nitrobenzoyl)piperidine

Participants

Reaction Steps

4-Nitrobenzoyl chloride (3.08 g) was added slowly to a stirred mixture of 4-(4-fluorobenzoyl)piperidine hydrochloride (4.0 g) and triethylamine (4.98 g) in methylene chloride (110 ml) at room temperature. The resulting mixture was stirred at this temperature for 1 hour, washed with 1N hydrochloric acid, saturated sodium bicarbonate solution, and brine, dried over magnesiun sulfate and concentrated in vacuo. The residue was recrystallized from a mixture of acetone and methanol to give 4-(4-fluorobenzoyl)-1-(4-nitrobenzoyl)piperidine (5.0 g) as colourless crystals.

Provenance & Evidence