Diisopropylethylamine → HCID 76601340, compound

Participants

Reaction Steps

Combine 2-(3-dimethylamino-pyrrolidin-1-yl)-benzothiazol-6-ylamine (0.100 g, 0.381 mmol) (Example 1, step 3), dissolved in CH2Cl2 (5.0 mL), with 5-phenyl-isoxazole-3-carboxylic acid (0.079 g, 0.419 mmol), HATU (0.145 g, 0.381 mmol), and DIEA (0.20 mL, 1.14 mmol) in a 40 mL reaction vial and shake the mixture overnight at 40° C. Dilute the mixture with CH2Cl2 (25 mL) and wash with 1.0 M NaOH (25 mL) which results in emulsions forming. Wait 3 h for the emulsions to disappear, separate the layers and dry the organic portion over sodium sulfate. Filter and concentrate in vacuo to yield the compound as a yellow solid. Purify using silica gel chromatography (5% MeOH/CH2Cl2) to afford the title compound as a yellowish-white solid (117 mg, 71%). mass spectrum (m/e): 434.2 [M+1], 432.2 [M−1]. 1H NMR (400 MHz, DMSO-d6): δ10.76 (s, 1H), 8.27 (d, 1H, J=2 Hz), 7.98 (m, 2H), 7.56-7.63 (m, 4H), 7.49 (s, 1H), 7.45 (d, 1H, J=8.8 Hz), 3.73 (t, 1H, J=9.2 Hz), 3.64 (t, 1H, J=9.2 Hz), 3.49 (m, 1H), 3.29 (m, 1H), 2.90 (m, 1H), 2.21 (s, 6H), 2.19 (m, 1H), 1.91 (m, 1H).

Provenance & Evidence