反应详情

温度

135 °C

N′-(3-chloro-5-oxo-5H-benzo[4,5]cyclohepta[1,2-b]pyridin-7-yl)-N-[(2R) 1,4-dioxan-2-ylmethyl]-N-methylsulfamide (0.500 g, 1.11 mmol), 1-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (0.692 g, 3.33 mmol), Pd2(dba)3 (0.051 g, 0.056 mmol), (tBu3)PBF4 (0.032 g, 0.11 mmol) and potassium fluoride (0.212 g, 3.66 mmol) were combined in a dry tube. 5 mL dry DMF was added and argon was bubbled through the solution for five minutes. The tube was sealed and heated in the Biotage Initiator series microwave to 135° C. for 20 minutes. The solution was diluted with ethyl acetate and washed with saturated sodium bicarbonate, water, and brine. The organic layer was dried with magnesium sulfate, filtered, concentrated in vacuo, and purified by silica chromatography (0-100% ethyl acetate/hexanes gradient followed by 0-10% methanol/dichloromethane gradient) to afford the crude compound. The crude material was crystallized from a mixture of 10 mL methanol, 40 mL dichloromethane, and 70 mL hexanes to afford the title compound. 1H NMR (600 MHz, D6-DMSO) δ 10.52 (s, 1H); 9.20 (d, 1H); 8.55 (d, 1H); 8.45 (s, 1H); 8.13 (s, 1H); 7.95 (d, 1H); 7.75 (d, 1H); 7.55 (d, 1H); 7.32 (d, 1H); 7.22 (d, 1H); 3.88 (s, 3H); 3.64-3.60 (m, 2H); 3.58-3.54 (m, 1H); 3.54-3.50 (m, 1H); 3.44-3.40 (m, 1H); 3.38-3.34 (m, 1H); 3.14-3.10 (m, 3H); 2.77 (s, 3H). LRMS (APCI) calc'd for (C24H26N5O5S) [M+H]+, 496.2; found, 496.2.

1. customargon was bubbled through the solution for five minutes
2. customThe tube was sealed
3. additionThe solution was diluted with ethyl acetate
4. washwashed with saturated sodium bicarbonate, water, and brine
5. dry with materialThe organic layer was dried with magnesium sulfate
6. filtrationfiltered
7. concentrationconcentrated in vacuo
8. custompurified by silica chromatography (0-100% ethyl acetate/hexanes gradient followed by 0-10% methanol/dichloromethane gradient)
9. customto afford the crude compound
10. customThe crude material was crystallized from a mixture of 10 mL methanol, 40 mL dichloromethane, and 70 mL hexanes