Potassium Iodide → N-Cyclopropyl-4-oxazol-5-yl-N-[1-(1-trifluoromethyl-cyclopropylmethyl)-piperidin-4-yl]-benzamide

Participants

Reaction Conditions

Reaction Steps

A mixture of N-cyclopropyl-N-[1-(2-hydroxy-2-methyl-propyl)-piperidin-4-yl]-4-oxazol-5-yl-benzamide (80 mg), methanesulfonic acid (1-trifluoromethyl-cyclopropyl)methyl ester (269 mg), K2CO3 (81 mg), and potassium iodide (38 mg) in N-methyl-2-pyrrolidone (3 mL) is stirred at 100° C. for two days. After cooling to room temperature, ethyl acetate and water are added to the mixture. The organic phase is separated, dried over MgSO4 and concentrated in vacuo. The residue is chromatographed on silica gel [dichloromethane/7 M ammonia in methanol 9:1→7:3] and the crude product is purified by preparative HPLC to give the title compound. LC (method 3): tR=1.22 min; Mass spectrum (ESI+): m/z=434 [M+H]+.

Provenance & Evidence