Diisopropylethylamine → HCID 11671294, compound

Participants

Reaction Steps

4-[2-(7-Aza-bicyclo[2.2.1]hept-7-yl)-ethoxy]-3-(4-bromo-2-methyl-2H-pyrazol-3-yl)-phenylamine (50.0 mg, 0.13 mmol) was added to a solution of 4-nitrophenylchloroformate (26.0 mg, 0.13 mmol) in 1,2-dichloroethane (4.0 mL) and the mixture stirred at room temperature for 1 hour. To the resulting precipitate mixture was added 2,4-difluorobenzylamine (0.030 mL, 0.25 mmol) and N,N-diisopropylethylamine (0.030 mL, 0.17 mmol), and the mixture stirred an additional 1 hour. The mixture was concentrated and purified by RP-HPLC. The collected fractions were concentrated and 12% sodium hydroxide (aq) (0.2 mL) was added to give pH 9. The solution was extracted into ethyl acetate and the organic layer was dried over sodium sulfate, filtered, and evaporated to dryness to give a white solid (62 mg, 87%). LCMS m/z (%)=560 (M+H 79Br, 100), 562 (M+H 81Br, 91). 1H NMR (400 MHz, DMSO-d6) δ: 8.59 (bs, 1H), 7.58 (bs, 1H), 7.48-7.38 (m, 2H), 7.29 (bs, 1H), 7.24-7.18 (m, 1H), 7.10-7.04 (ma, 2H), 6.60-5.59 (m, 1H), 4.29 (d, J=4.0 Hz, 2H), 4.06-3.96 (m, 2H), 3.64 (s, 3H), 3.11 (bs, 2H), 2.58-2.54 (m, 2H), 1.54-1.52 (m, 4H), 1.15-1.13 (m, 4H).

Provenance & Evidence