反应详情

温度

25 °C

To a solution of 4-(4-bromo-1-methyl-1H-pyrazol-5-yl)-5-chloro-2-thiophenecarboxylic acid (81 mg, 0.252 mmol), n,n-diisopropylethylamine (0.22 ml, 1.26 mmol) and 2-[(2S)-2-amino-3-cyclohexylpropyl]-1H-isoindole-1,3(2H)-dione (81 mg, 0.25 mmol) in DCM at 25° C. was added bromo-tris-pyrrolidino-phosphonium hexafluorophosphate (141 mg, 0.302 mmol) in one portion. The solution stirred at 25° C. for 12 h and was then partitioned between H2O-DCM. The aqueous phase was washed several times with DCM and the combined organic fractions were dried over Na2SO4, concentrated and purified via column chromatography (silica, 40% EtOAc in hexanes) yielding 4-(4-bromo-1-methyl-1H-pyrazol-5-yl)-5-chloro-N-{(1S)-2-cyclohexyl-1-[(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)methyl]ethyl}-2-thiophenecarboxamide (47 mg, 0.080 mmol, 31.6% yield) as a clear oil: LCMS (ES) m/e 589, 591 (M, M+2)+.

1. customwas then partitioned between H2O-DCM
2. washThe aqueous phase was washed several times with DCM
3. dry with materialthe combined organic fractions were dried over Na2SO4
4. concentrationconcentrated
5. custompurified via column chromatography (silica, 40% EtOAc in hexanes)