Diisopropylethylamine → (2-(1-(2,4-difluorophenyl)-1H-1,2,4-triazol-5-yl)-4,5-dihydrobenzo[b]thieno[2,3-d]oxepin-9-yl)((S)-3-(dimethylamino)pyrrolidin-1-yl)methanone

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To a stirred solution of 2-[2-(2,4-difluoro-phenyl)-2H-[1,2,4]triazol-3-yl]-4,5-dihydro-6-oxa-1-thia-benzo[e]azulene-9-carboxylic acid (70 mg; 0.16 mmol) in DMF (5 ml) was added HATU (103 mg; 0.27 mmol), DIPEA (50 μl; 0.27 mmol) and (S)-(+3-(dimethylamino)pyrrolidine (50 μl; 0.38 mmol). The reaction mixture was stirred at r.t. for 4 h upon which time it was diluted with EtOAc (20 ml) and washed successively with satd. NaHCO3 (20 ml) and brine (2×20 ml). The organic layer was dried (Na2SO4), concentrated and purified by prep. LCMS to give 420 as an off-white solid (50 mg; 58%). δH (400 MHz, CDCl3) 1.77-1.92 (br m, 1H), 2.06-2.17 (m, 1H), 2.24 (br s, 3H), 2.35 (br s, 3H), 2.60-2.83 (m, 1H), 3.16 (br s, 2H), 3.29-3.98 (m, 4H), 4.33 (br s, 2H), 6.94-7.20 (m, 4H), 7.32-7.39 (m, 1H), 7.50-7.60 (m, 1H), 7.77 (s, 1H), 8.11 (s, [M+H]+: 522

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