Phenylacetic Acid → N-Cyclopropyl-2-phenyl-N-[4-(1H-pyrrolo[2,3-b]pyridin-3-yl)-thiazol-2-yl]-acetamide

関与物質

反応条件

反応手順

Cyclopropyl-[4-(1H-pyrrolo[2,3-b]pyridin-3-yl)-thiazol-2-yl]-amine (50 mg, 0.39 mmol), phenylacetic acid (63 mg, 0.47 mmol) and N-(1-methanesulfonyl)benzotriazole (93 mg, 0.47 mmol) were placed in a microwave reaction vessel (Personal Chemistry, Uppsala, Sweden). 5% DMF-THF (4 mL) was added followed by triethylamine (0.163 mL, 1.17 mmol) and the mixture heated in the sealed tube at 180° C. for 15 minutes. Upon cooling to room temperature the reaction was concentrated and then purified by prepartative TLC (thin layer chromatography) and eluted with ethylacetate and hexane (3:1). Extraction of the silica gel with 5% MeOH-EtOAc was carried out to give product (15 mg, 10%). Alternatively, Cyclopropyl-[4-(1H-pyrrolo[2,3-b]pyridin-3-yl)-thiazol-2-yl]-amine (50 mg, 0.39 mmol), phenylacetic acid (63 mg, 0.47 mmol) and fluoro-N,N′,N′,N′-tetramethylformamidiniun hexafluorophosphate (148 mg, 0.59 mmol) were placed in a microwave reaction vessel (Personal Chemistry, Uppsala, Sweden). 5% DMF-THF (4 mL) was added followed by triethylamine (0.163 mL, 1.17 mmol) and the mixture heated in the sealed tube at 180° C. for 15 minutes. Upon cooling to room temperature the reaction was concentrated and then purified by prepartative TLC (thin layer chromatography) and eluted with ethylacetate and hexane (3:1). Extraction of the silica gel with 5% MeOH-EtOAc was carried out to give product (18 mg, 12%). The material was isolated as an HCl salt. LC/MS MH+ =375.2, LC/MS RT: 3.39 min. 1H NMR (500 MHz, DMSO-d6, ppm) 11.92 (s,1H), 8.63 (d,1H, J=7.88 Hz), 8.29 (dd,1H, J=4.71, 1.49 Hz), 8.96 (d,J=2.58,1H), 7.44 (s,1H), 7.36-7.19 (m,6H), 4.27 (s,2H), 3.29 (t, 1H,J=3.78), 1.33 (m,2H), 1.06 (m,2H).

情報源と証拠