Acetonitrile--water (1/1) → HCID 67044596, compound

Participants

Reaction Steps

A solution of 2-(3-chloro-2-fluorophenyl)-3-(3,4-diaminophenyl)-3-hydroxy-2,3-dihydro-1H-isoindol-1-one (0.10 g, 0.26 mmol) and methyl {[(1Z)-{[(methyloxy)(oxo)acetyl]amino}(methylthio)methylidene]amino}(oxo)acetate (67 mg, 0.26 mmol) in n-butanol (2.0 mL) was heated to 80° C. for 5 hours. The reaction mixture was cooled to room temperature and the solvent was evaporated. The resulting crude product was purified by reverse phase preparative HPLC (CH3CN/25 mM aqueous ammonium acetate). The fractions were collected, and the solvent was concentrated. The aqueous residue was partitioned with ethyl acetate. The organic layer was washed with saturated aqueous sodium bicarbonate, brine and dried over anhydrous sodium sulfate. Filtration and concentration resulted in an oily residue, which was lyophillized from a mixture of acetonitrile-water (5.0 mL) to give methyl ({6-[2-(3-chloro-2-fluorophenyl)-1-hydroxy-3-oxo-2,3-dihydro-1H-isoindol-1-yl]-1H-benzimidazol-2-yl}amino)(oxo)acetate (48 mg, 38% yield. 1H NMR (400 MHz, DMSO-d6): 11.86 (d, 1H), 7.87 (d, 1H), 7.65 (m, 2H), 7.53 (t, 1H), 7.33 (t, 1H), 7.30 (d, 1H), 7.25 (s, 1H), 7.20 (t, 1H), 6.99 (d, 1H), 6.91 (d, 1H), 3.57 (s, 3H); 13C NMR (400 MHz, DMSO-d6): 67.0, 92.5, 110.0, 113.8, 114.1, 115.7, 120.8, 121.4, 123.9, 125.3, 125.6, 126.0, 126.2, 129.5, 129.8, 130.5, 130.7, 134.3, 134.8, 150.3, 155.7, 155.8, 163.5, 166.2; MS (EI) for C24H16ClFN4O4: 436 (M-CO2CH3).

Provenance & Evidence