反应详情

In a screw cap vial (2-cyclopropyl-8-methoxy-[1,2,4]triazolo[1,5-a]pyridin-5-yl)boronic acid, compound 303, (26 mg, 0.1 mmol) was dissolved in DME (0.6 mL) and 1 M K2CO3 (0.2 mL) under argon. 2-Bromo-isonicotinonitrile (18 mg, 0.1 mmol) and Pd(PPh3)4 (6 mg, 0.005 mmol) were added. The suspension was shaken at 80° C. for 17 h after which brine was added, and the aqueous phase was extracted with DCM (×3). The combined organic phases were dried, filtered and concentrated. The crude product was purified by flash chromatography, eluent TBME:heptane 4:1->9:1. This afforded the title compound as a solid 1H NMR (300 MHz, DMSO) δ 9.23-9.09 (m, 1H), 9.00 (dd, J=4.9, 0.8 Hz, 1H), 7.95 (dd, J=4.9, 1.5 Hz, 1H), 7.90 (d, J=8.3 Hz, 1H), 7.24 (d, J=8.4 Hz, 1H), 4.03 (s, 3H), 2.29 (tt, J=8.1, 5.0 Hz, 1H), 1.18-0.87 (m, 4H).

1. additionwas added
2. extractionthe aqueous phase was extracted with DCM (×3)
3. customThe combined organic phases were dried
4. filtrationfiltered
5. concentrationconcentrated
6. customThe crude product was purified by flash chromatography, eluent TBME:heptane 4:1->9:1