Acetone Cyanohydrin → HCID 54721651, compound

Participants

Reaction Steps

The title compound was prepared as described in General Method 8 using the following: 5,6-dihydro-4-hydroxy-6,6-diphenyl-2H-pyran-2-one (0.300 g, 1.13 mmol), Et3N (0.160 mL, 1.15 mmol), l-naphthoyl chloride (1.13 mmol), CH2Cl2 (6.0 mL), acetonitrile (4.0 mL), acetone cyanohydrin (0.05 mL, 0.5 mmol), Et3N (0.35 mL, 2.5 mmol), glacial acetic acid (6.0 mL), sodium cyanoborohydride (0.50 g, 7.9 mmol). Purification was achieved by submitting the final residue to column chromatograpy (SiO2, 100% CH2Cl2 to 1.5% MeOH in CH2 Cl2) to provide a solid (0.120 g, 203°-205° C.(dec.)). 1H NMR (400 MHz, DMSO-d6) δ 11.223 (bs, 1 H), 8.057 (d, 1 H, J=7 Hz), 7.855-7.821 (m, 1 H), 7.603 (d, 1 H, J=8 Hz), 7.514-7.302 (m, 12 H), 6.866 (dd, 1 H, J=6.5 Hz, J=8 Hz), 5.975 (d, 1 H, J=7 Hz), 3.874 (s, 2 H), 3.621 (s, 2 H).

Provenance & Evidence