反应详情

温度

40 °C

A stirred mixture of 6-ethylsulfanyl-pyridazine-3-carboxylic acid (0.37 g, 2.00 mmol) and CDI (0.36 g, 2.20 mmol) in N,N-dimethylformamide (20 mL) was heated to 40° C. under nitrogen. After 1 h, 5-Aminomethyl-2-(3-methyl-2,6-dioxo-piperidin-3-yl)-isoindole-1,3-dione hydrochloride (0.68 g, 2.00 mmol) was added and the mixture was heated at 40° C. for 1.5 h. The mixture was cooled to rt and water (40 mL) was added. After 3 h, the product was isolated by filtration, washed with water (10 mL) and dried in vacuo to give 6-ethylsulfanyl-pyridazine-3-carboxylic acid [2-(3-methyl-2,6-dioxo-piperidin-3-yl)-1,3-dioxo-2,3-dihydro-1H-isoindol-5-ylmethyl]amide as a white solid (0.76 g, 81% yield): HPLC: Waters Symmetry C18, 5 μm, 3.9×150 mm, 1 mL/min, 240 nm, 40/60 CH3CN/0.1% H3PO4, 5.24 min (95.32%); mp: 160-162° C.; 1H NMR (DMSO-d6) δ 1.38 (t, J=7.3 Hz, 3H, CH3), 1.88 (s, 3H, CH3), 1.95-2.14 (m, 1H, CHH), 2.52-2.61 (m, 2H, CHH, CHH), 2.61-2.79 (m, 1H, CHH), 3.24-3.43 (m, 2H, CH2), 4.66 (d, J=6.2 Hz, 2H, CH2), 7.74-7.87 (m, 4H, Ar), 7.96 (d, J=8.9 Hz, 1H, Ar), 9.97 (t, J=6.2 Hz, 1H, NH), 11.02 (s, 1H, NH); 13C NMR (DMSO-d6) δ 12.67, 19.51, 22.51, 27.07, 27.60, 40.92, 57.25, 120.31, 121.67, 123.40, 125.41, 128.17, 129.87, 132.06, 145.52, 148.23, 161.45, 163.51, 166.22, 166.37, 170.65, 170.71; LCMS: MH=468; Anal Calcd for C22H21N5O5S+0.2H2O: C, 56.09; H, 4.58; N, 14.87. Found: C, 55.86; H, 4.59; N, 14.72.

1. temperaturethe mixture was heated at 40° C. for 1.5 h
2. temperatureThe mixture was cooled to rt
3. waitAfter 3 h
4. customthe product was isolated by filtration
5. washwashed with water (10 mL)
6. customdried in vacuo