Dimethylformamide → HCID 22478976, compound

Participants

Reaction Conditions

Reaction Steps

To a stirred suspension at room temperature of 245 (795 mg, 2.05 mmol) in anhydrous DMF (10 ml) was added a solution of NaOH (409 mg, 10.22 mmol) in anhydrous MeOH (5.1 ml). Then, the reaction mixture was warmed up to 40° C. After 3 days, the reaction mixture was concentrated, diluted with water and acidified with 1N HCl until pH 5 in order to get a pale pinky precipitate. After 30 min, the suspension was filtered off and the cake was abundantly washed with water, and dried to afford the title compound 246 (679 mg, 1.84 mmol, 90% yield) as a pale pinky solid. 1H NMR (300 MHz, DMSO-d6) δ (ppm): AB system (δA=7.92, δB=7.40, J=8.4 Hz, 4H), 7.56 (t, J=8.1 Hz, 1H), 7.47 (d, J=7.5 Hz, 1H), 7.31 (d, J=8.3 Hz, 1H), 5.59 (bs, 2H), 2.95 (s, 3H).

Provenance & Evidence