反应详情

To a mixture of [4-(4-amino-2-chloro-phenyl)-piperazin-1-yl]-phenyl-acetic acid methyl ester (25 mg, 0.07 mmol), 2-methyl-benzoic acid (19 mg, 0.14 mmol), EDC (27 mg, 0.14 mmol), and HOBt (19 mg, 0.14 mmol) in DCM (5 mL) was added N-methylmorpholine (77 μL, 0.70 mmol). After 16 h, the mixture was diluted with satd. aq. NaHCO3 (10 mL) and extracted with DCM (75 mL). The organic fraction was washed with brine, dried (Na2SO4), and concentrated. The residue was purified by SiO2 column chromatography to provide the title compound (16 mg, 46%). MS (ESI): mass calcd. for C27H28ClN3O3, 477.18. m/z found, 478.4 [M+H]+. 1H NMR (CDCl3): 7.76-7.60 (m, 1H), 7.51-7.23 (m, 8H), 7.22-7.15 (m, 2H), 6.97 (d, J=8.7, 1H), 3.66 (s, 3H), 3.15-2.93 (m, 5H), 2.85-2.49 (m, 4H), 2.42 (s, 3H).

1. additionthe mixture was diluted with satd
2. extractionaq. NaHCO3 (10 mL) and extracted with DCM (75 mL)
3. washThe organic fraction was washed with brine
4. dry with materialdried (Na2SO4)
5. concentrationconcentrated
6. customThe residue was purified by SiO2 column chromatography