Acetamide → HCID 25196902, compound

Participants

Reaction Steps

33C (180 mg, 0.58 mmol) was dissolved in THF (3 mL) and added to acetamide (687 mg, 11.64 mmol) and palladium(II) chloride (61.9 mg, 0.35 mmol) in H2O (1 mL). This suspension was left stirring at RT for 1 h then the temperature was increased to 50° C. and reaction stirred for 2 h. The reaction mixture was filtered on a Varian C18 reverse phase cartridge and the cartridge was washed with MeOH. The crude material was purified on preparative HPLC MS using the long high pH 25 to 45% gradient method (ACN in H2O ammonium carbonate buffer, 25 min.) on XBridge Prep C18 OBD, 30×150 mm, 5 mm, Waters reverse phase column. Evaporation of the desired pure fractions provided 105 mg 33D (55.1% yield). 1H NMR (400 MHz, CHLOROFORM-d) δ ppm 1.28-1.39 (m, 1H) 1.63-1.79 (m, 3H) 1.80-1.96 (m, 2H) 1.97-2.13 (m, 3H) 2.32 (q, J=4.82 Hz, 4H) 2.56 (ddd, J=9.28, 5.76, 4.10 Hz, 1H) 2.65-2.83 (m, 1H) 3.54-3.77 (m, 4H) 5.58 (br. s., 1H) 6.07 (br. s., 1H) 7.30-7.43 (m, 2H) 7.52-7.61 (m, 2H), ES (M+H)+=328.3.

Provenance & Evidence