Sodium Hydroxide → HCID 16203445, compound

Participants

Reaction Steps

To a solution 150 (0.150 g, 0.36 mmol) in methanol (10 mL) was added NaOH (50%, 2 mL) at room temperature. The reaction mixture was stirred at room temperature for 24 h before being diluted with ethyl acetate. The organic layer was washed with water, dried over anhydrous Na2SO4, filtered and concentrated. The residue obtained was purified by column chromatography on silica gel column using ethyl acetate-hexane (2:3) as eluent to furnish (151) (0.105 g, 78%): mp 163-64° C., 1H NMR (400 MHz, CDCl3): δ 1.06-1.17 (m, 1H), 1.72-1.78 (m, 1H), 2.76-2.89 (m, 2H), 3.76 (s, 3H), 3.87 (s, 3H), 4.55-7.70 (m, 2H), 5.66 (d, J=10.0 Hz, 1H), 6.82 (d, J=9.2 Hz, 2H), 6.92-6.95 (dd, J=2.4 and 8.8 Hz, 1H), 6.99 (d, J=9.2 Hz, 2H), 7.07 (d, J=8.4 Hz, 1H), 7.50 (d, J=2.4 Hz, 1H). 13C NMR (400 MHz, CDCl3): δ 24.38, 28.90, 48.57, 55.46, 55.76, 61.40, 69.61, 108.02, 114.34, 119.12, 127.53, 127.84, 128.47, 130.32, 132.61, 157.67, 158.36, 159.42, 168.66. Anal. (C21H22N2O4) C, H, N.

Provenance & Evidence