Sodium borohydride → HCID 10155327, compound

Participants

Reaction Conditions

Reaction Steps

To a suspension of 274 (300 mg, 0.85 mmol) in MeOH (8 ml) and water (1 ml) was added NaBH4 (75 mg, 1.95 mmol). The reaction mixture was stirred at 50° C. 16 h and cooled down. Water was added to the solution and the precipitated was filtered and rinsed with cold water to afford the title compound 275 (224 mg, 74%) as a white solid. 1H NMR: (acetone) δ (ppm): 9.05 (bs, 1H), 8.00 (dd, J=8.2, 2.7 Hz, 2H), 7.47 (d, J=8.5 Hz, 1H), 7.43 (d, J=8.2 Hz, 1H), 7.38-7.30 (m, 2H), 7.22-7.12 (m, 3H), 7.01 (ddd, J=7.6, 7.6, 1.5 Hz, 1H), 6.87 (dd, J=8.0, 1.1 Hz, 1H), 6.68 (dd, J=7.6, 7.6 Hz, 1H), 4.98 (t, J=5.8 Hz, 0.4H), 4.89 (t, J=6.7 Hz, 0.6H), 4.63 (bs, 2H), 4.45 (d, J=6.9 Hz, 0.6H), 4.06 (d, J=6.0 Hz, 0.4H), 3.30-3.19 (m, 1H), 2.88-2.48 (m, 3H, CH2). LRMS: 358.2 (calc.); 359.1 (found).

Provenance & Evidence