Triethylamine → 1-(4-((5-Fluorobenzo[d]thiazol-2-yl)methyl)piperazin-1-yl)-2-(-4-(4-nitro-3-(trifluoromethyl)phenylamino)cyclohexyloxy)ethanone

Participants

Reaction Steps

A mixture of 5-fluoro-2-(piperazin-1-ylmethyl)-1,3-benzothiazole (130 mg, 0.52 mmol), EDAC.HCl (149 mg, 0.78 mmol), HOBt (105 mg, 0.78 mmol) and triethylamine (157 mg, 1.55 mmol) in dichloromethane (30 ml) was stirred for 1 hour at room temperature before the addition of 2-(-4-(4-nitro-3-(trifluoromethyl)phenylamino)cyclohexyloxy)acetic acid (187 mg, 0.52 mmol). After stirring overnight at room temperature, the solution was diluted with dichloromethane (100 ml) and washed with water (50 ml), dried over anhydrous sodium sulfate, filtered, and concentrated under vacuum to give a residue, which was purified by HPLC to afford 1-(4-((5-fluorobenzo[d]thiazol-2-yl)methyl)piperazin-1-yl)-2-(-4-(4-nitro-3-(trifluoromethyl)phenylamino)cyclohexyloxy)ethanone as a yellow solid (162.0 mg, 53%). (ES, m/z): [M+H]+ 596.00; 1H NMR (300 MHz, CDCl3): δ 8.01 (d, J=9.0 Hz, 1H), 7.87 (dd, J=8.7, 4.8 Hz, 1H), 7.72 (dd, J=9.0, 2.4 Hz, 1H), 7.29-7.23 (m, 1H), 6.84 (d, J=2.1 Hz, 1H), 6.62 (dd, J=9.0, 2.1 Hz, 1H), 5.52 (br s, 1H), 4.47 (s, 2H), 4.20 (s, 2H), 3.93-3.90 (m, 4H), 3.43-3.33 (m, 2H), 3.22-3.19 (m, 4H), 2.11-2.01 (m, 4H), 1.48-1.37 (m, 2H), 1.32-1.21 (m, 2H).

Provenance & Evidence