Ammonia → 4-[3-(2-Chloro-ethyl)-cinnolin-7-yl]-benzonitrile

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

A mixture of the product from Example 169C (0.095 g, 0.312 mmol), 4-cyanophenylboronic acid (0.046 g, 0.343 mmol), Pd(PPh3)2Cl2 (0.011 g, 0.016 mmol), and 1 M Na2CO3 (0.778 mL, 0.778 mmol) in de-gassed isopropanol/toluene (5 mL, 1:1) was heated to 90° C. under a dry nitrogen atmosphere for 24 hours. After cooling, the reaction mixture was diluted with 20 mL water, extracted twice with 25 mL dichloromethane, and concentrated under reduced pressure. The crude material was purified by column chromatography (1000% dichloromethane to 99:1 dichloromethane/methanol) to afford the product in 50% yield as a brown-orange solid. 1H NMR (CDCl3, 300 MHz) δ 8.76 (d, J=3 Hz, 1H), 8.02 (dd, J=3, 9 Hz, 1H), 7.96 (d, J=9 Hz, 1H), 7.87 (q, J=9 Hz, 4H), 7.80 (s, 1H), 4.14 (t, J=6 Hz, 2H), 3.69 (t, J=6 Hz, 2H). MS (DCl—NH3) [M−Cl]+ at 258, [M+H]+ at 294.

Herkunft & Nachweise