反应详情

温度

0 °C

In an argon atmosphere, 506 mg (1.5 mmol) of 4,4″-diethoxy-1′H-[2,2′;6′,2″]terpyridin-4′-one (L17, Example 23) are added at 0° C. to a suspension of 78 mg (approximately 60% dispersion in paraffin oil, 1.95 mmol) of sodium hydride in 15 ml of absolute N,N-dimethylformamide. The mixture is then stirred for 15 minutes at 0° C. and for 15 minutes at room temperature. After cooling again, 0.12 ml (1.95 mmol) of methyl iodide is added. Stirring is then carried out at room temperature for a further 45 minutes. 15 ml of water are added and filtration is carried out, yielding 4,4″-diethoxy-4′-methoxy-[2,2′;6′,2″]terpyridine in the form of a beige powder. 1H-NMR (360 MHz, CDCl3): 1.39 (t, 6 H, J=7.2 Hz); 3.90 (s, 3H); 4.12 (q, 4H, J=7.2 Hz); 6.73 (dd, 2H, J=5.6, 2.5 Hz); 7.88 (s, 2H); 8.01 (d, 2H, J=2.5 Hz); 8.39 (d, 2H, 5.6 Hz). MS (EI pos, 70 eV), m/z=351 (90, [M+]); 350 (70); 336 (100); 323 (70); 295 (45).

1. temperatureAfter cooling again
2. stirringStirring
3. waitis then carried out at room temperature for a further 45 minutes
4. filtrationfiltration