反应条件: temp:50.01; pressure:0.00; stir:; See reaction.notes.procedure_details.
实验步骤: A mixture of N-{3-[5-(2-chloro-4-pyrimidinyl)-2-(1,1-dimethylethyl)-1,3-thiazol-4-yl]-2-fluorophenyl}-2,5-difluorobenzenesulfonamide (0.15 g, 0.28 mmol), 1-(2-aminoethyl)-2-pyrrolidinone (0.18 g, 0.83 mmol) and DIEA (0.10 ml, 0.56 mmol) in MeOH (0.5 ml) was heated at 50° C. for 2 h. LCMS analysis indicated that the reaction was proceeding very slowly, another equivalent amine and DIEA was added and the reaction was heated overnight. LCMS analysis indicated the reaction had still not progressed sufficiently so the reaction was heated overnight again. LCMS analysis indicated the reaction had progressed sufficiently so the reaction mixture was concentrated onto silica gel and purified by flash chromatography to afford a colourless foam. The product was dissolved in DCM and washed with HCl (10% Aq.) to remove some residual DIEA and the organics were dried over MgSO4, filtered and the filtrate was concentrated in vacuo to afford the title compound (0.12 g, 67% yield); 1H NMR (400 MHz, DMSO-d6) δ ppm 10.77 (s, 1H), 8.07 (d, J=5.1 Hz, 1H), 7.22-7.65 (m, 7H), 3.21-3.45 (m, 6H), 2.11-2.22 (m, 2H), 1.82-1.93 (m, 2H), 1.41 (s, 9H). MS (ES+): 631 [M+H]+.
the reaction was heated overnight
was heated overnight again
was concentrated onto silica gel
purified by flash chromatography
to afford a colourless foam
washed with HCl (10% Aq.)
to remove some residual DIEA
the organics were dried over MgSO4
filtered
the filtrate was concentrated in vacuo
来源 ID: ord-8aa7bd77a89f4493a44916b82c229b1a