反应详情

温度

120 °C

To a suspension of 1-(7-chloro-4-methoxy-1H-pyrrolo[2,3-c]pyridin-3-yl)-2-(4-(1-phenyl-1H-tetrazol-5-yl)piperazin-1-yl)ethane-1,2-dione (2.50 g, 5.35 mmol) in 1,4-dioxane (60 mL) in a sealable flask was added ethyl 3-(tributylstannyl)-1H-pyrazole-5-carboxylate (2.30 g, 5.36 mmol) followed by tetrakis(triphenylphosphine)palladium(0) (1.86 g, 1.61 mmol). The mixture was flushed with N2, the flask was sealed, and the mixture was heated to 120° C. for 16 hr. The mixture was cooled to rt and diluted with MeOH (50 mL). The remaining solids were removed by filtering the mixture through a pad of celite and were washed with MeOH (25 mL). The remaining solvent was concentrated under reduced pressure. The resulting residue was dissolved in MeOH, and loaded onto a silica gel. After the silica was dry, a column was run using the biotage system with a 0 to 10% MeOH in CH2Cl2 gradient. After concentrating the desired fractions, 1.05 g of ethyl 3-(4-methoxy-3-(2-oxo-2-(4-(1-phenyl-1H-tetrazol-5-yl)piperazin-1-yl)acetyl)-1H-pyrrolo[2,3-c]pyridin-7-yl)-1H-pyrazole-5-carboxylate was recovered as an orange solid. LCMS: m/e 571.2 (M+H)+, ret time 2.01 min (method 2). 1H NMR (500 MHz, DMSO-D6) δ ppm 12.39-12.72 (m, 1 H) 8.37 (s, 1 H) 8.11 (s, 1 H) 7.52-7.76 (m, 6 H) 4.68-4.85 (m, 1 H) 4.38 (q, J=7.02 Hz, 2 H) 3.98-4.06 (m, 3 H) 3.67-3.73 (m, 2 H) 3.43-3.49 (m, 2 H) 3.28-3.36 (m, 2 H) 3.14-3.22 (m, 2 H) 1.36 (t, J=7.17 Hz, 3 H).

1. customThe mixture was flushed with N2
2. customthe flask was sealed
3. temperatureThe mixture was cooled to rt
4. additiondiluted with MeOH (50 mL)
5. customThe remaining solids were removed
6. filtrationby filtering the mixture through a pad of celite
7. washwere washed with MeOH (25 mL)
8. concentrationThe remaining solvent was concentrated under reduced pressure
9. dissolutionThe resulting residue was dissolved in MeOH
10. customAfter the silica was dry
11. concentrationAfter concentrating the desired fractions, 1.05 g of ethyl 3-(4-methoxy-3-(2-oxo-2-(4-(1-phenyl-1H-tetrazol-5-yl)piperazin-1-yl)acetyl)-1H-pyrrolo[2,3-c]pyridin-7-yl)-1H-pyrazole-5-carboxylate
12. customwas recovered as an orange solid
13. customm/e 571.2 (M+H)+, ret time 2.01 min (method 2)