Methanol → HCID 67598756, compound

Participants

Reaction Steps

A suspension of 1-acetyl-2-(3-methoxy-2-nitrophenylmethylene)-3-oxo-2,3-dihydroindole from Example 35 (460 mg, 1.36 mmol), 10% Pd/C (70 mg) and MeOH (17 mL) was stirred under H2 at atmospheric pressure (balloon) for 3 hours. Additional Pd/C (70 mg) was added, a fresh balloon of H2 was attached and the mixture was stirred at room temperature overnight. The Pd/C catalyst was filtered over celite and the filtrate was evaporated. The resulting crude yellow product (209 mg, >100%) was purified by LPLC, eluting with CH2Cl2, then CH2Cl2 /EtOAc (3:97), to obtain 208 mg (53%) of the title compound as a colorless solid, Rf 0.47 (hexane-EtOAc 1:1), mp 125.1-125.8° C.; 1H NMR (CDCl3) δ 9.02 (s, 1H), 8.62 (dd, J=7.6; J=0.8 1H), 8.13 (d, J=8.4, 1H), 7.65 (dt, J=8.0; J=0.8, 1H), 7.59 (d, J=8.4, 1H), 7.53 (m, 2H), 7.11 (d, J=7.6, 1H), 4.18 (s, 3H), 2.97 (s, 3H); 13C NMR (CDCl3) δ 169.8, 155.2, 146.5, 141.4, 138.1, 131.9, 130.5, 128.6, 126.3, 124.3, 124.2, 122.7, 121.6, 120.5, 115.6, 106.7, 56.2, 27.7; MS (EI, m/z) 290 (M+).

Provenance & Evidence