1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → 1-phenyl-1H-imidazole-4-carboxylic acid {2-[3-(2-chloro-phenoxy)-azetidin-1-yl]-2-oxo-ethyl}-amide

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Reaction Steps

DIPEA (141 mg, 1.09 mmol) was added to a stirred solution of [(1-phenyl-1H-imidazole-4-carbonyl)-amino]-acetic acid (prepared from Intermediate 68 by means of Step 3 of the General Scheme) (67 mg, 0.27 mmol) in DMF (3 mL) followed by HOBt (39 mg, 0.28 mmol) and EDCI (56 mg, 0.28 mmol). After 2 minutes of stirring, 3-(2-chloro-phenoxy)-azetidine hydrochloride (prepared by the method used for the synthesis of Intermediate 71) (60 mg, 0.27 mmol) was added and the resulting mixture was stirred at ambient temperature overnight. Partitioning with cold water and ethyl acetate and concentration of the organic layer after drying over sodium sulfate afforded a residue which was purified by column chromatography (using silica gel 60-120 and 100% EtOAc as eluent) to afford 30 mg (26.7% Yield) of 1-phenyl-1H-imidazole-4-carboxylic acid {2-[3-(2-chloro-phenoxy)-azetidin-1-yl]-2-oxo-ethyl}-amide. LC/MS [M+H]+: 411, 98.45%. 1H NMR (300 MHz, DMSO-d6): δ 8.34 (d, 1H), 8.28 (d, 1H), 8.12 (t, 1H), 7.72 (d, 1H), 7.44 (m, 3H), 7.38 (m, 1H), 7.26 (m, 1H), 6.8 (m, 1H), 6.7 (d, 1H), 5.1 (m, 1H), 4.7 (m, 1H), 4.4 (m, 1H), 4.2 (m, 1H), 3.8 (m, 3H).

Provenance & Evidence