Hydrochloric Acid → HCID 25106871, compound

Participants

Reaction Steps

To a room temperature solution of 3.4 (25 mg, 0.043 mmol) dissolved in a mixture of tetrahydrofuran (2 mL) and methanol (1 mL) was added a solution of lithium hydroxide (50 mg, 2.1 mmol) dissolved in water (1 mL). The reaction was stirred at room temperature for 1 h then poured into aqueous 1N hydrochloric acid solution. The aqueous mixture was extracted twice with ethyl acetate. The combined organic extracts were washed twice with water then brine, stirred over magnesium sulfate, filtered and the filtrate concentrated in vacuo on a rotary evaporator to afford a colorless solid. LC-MS ESI (neg.) m/z: 547.0 (M−H). 1H NMR (400 MHz) (d6-DMSO) δ 12.30 (br s, 1H); 9.80 (br s, 1H); 7.63 (d, J=8.8 Hz, 1H); 7.53 (d, J=2.0 Hz, 1H); 7.31 (dd, J=2.4 & 8.8 Hz, 1H); 7.22 (d, J=8.8 Hz, 1H); 6.89 (d, J=1.6 Hz, 1H); 6.59 (d, J=1.6 Hz, 1H); 6.39 (d, J=8.8 Hz, 1H); 6.23 (dd, J=3.6 & 3.6 Hz, 1H); 3.70 (s, 3H); 3.63 (s, 3H); 3.52 (s, 2H): 2.41 (s, 3H) ppm.

Provenance & Evidence