Methanol → HCID 21309686, compound

Participants

Reaction Steps

To the compound from step 47a above, dissolved in 4 mL of THF, was added 3.39 mL of BH3 and the mixture was heated at reflux for 2 hours. Methanol was added to the reaction mixture and evaporated The residue was dissolved in anhydrous ethanol. Cesium fluoride was added, and the resultant solution was stirred under reflux for 16 hr. Evaporation of the solvent provided a white solid which was purified on a silica gel column. MS (DCI/NH3) m/e: 223 (M+H)+. 1H NMR (CDCl3, 300 MHz) δ: 8.34 (m, 1H), 8.23 (t, J=3 Hz, 1H), 7.22 (m, 1H), 3.93-4.10 (m, 3H), 3.44-3.54 (m, 1H), 3.32 (s, 3H), 3.03-2.87 (m, 1H), 2.51 (s, 3H), 2.44-2.33 (m, 1H), 2.11-1.92 (m, 2H).

Provenance & Evidence