Hydrochloric Acid → HCID 67439719, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 6-[3-formyl-4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-phenoxy]-2-[2-(tetrahydro-pyran-2-yloxy)-ethoxy]-nicotinonitrile (2.5 g, 5.15 mmol) in methanol (15 mL) at 0° C. was added sodium borohydride (0.38 g, 10.32 mmol). After 1 h at rt, the solution was cooled in an ice bath and 2M HCl was added until pH reached to 3˜4. The resulting mixture was stirred at 0° C. for 2 h and then at room temperature for 30 min. The solvent was removed under reduced pressure purification was accomplished by reverse phase prep HPLC using CH3CN/H2O (0.1% AcOH) as the eluent to yield the title compound D99 (1.0 g, 40%) as white solid. 1H NMR (400 MHz, DMSO-d6) δ ppm 9.23 (s, 1 H), 8.22 (d, J=8.2 Hz, 1 H), 7.77 (d, J=8.2 Hz, 1 H), 7.27 (s, 1 H), 7.18 (d, J=8.2 Hz, 1 H), 6.66 (d, J=8.6 Hz, 1 H), 4.97 (s, 2 H), 4.82 (t, 1 H), 4.12 (t, J=4.9 Hz, 2 H), 3.73-3.50 (m, 2 H); MS (ES) m/z: 313 (M+1)+; HPLC purity 98.78% (Maxplot), 98.58% (220 nm).

Provenance & Evidence