反应详情

温度

130 °C

Methyl 5-(4-chlorophenyl)-3-{[(1E)-(dimethylamino)methylene]amino}thiophene-2-carboxylate (1.39 g, 4.29 mmol) and 1-{6-[(1-methylpiperidin-4-yl)oxy]pyridin-2-yl}methanamine (0.950 g, 4.29 mmol, from step b above) were mixed with 4 g of phenol and heated to 130° C. on an oil bath for 1 h. When the mixture had cooled down it was diluted with 150 mL of diethyl ether. The mixture became opaque and left overnight. Very little had precipitated but when evaporation of ether was commenced much precipitate was formed and filtered off. The material was recrystallized from ethanol, filtered, washed with ethanol and dried to give 0.675 g (32%) of the desired compound. Mp 202-203° C. 1H NMR (600 MHz, CD3OD) δ 8.43 (s, 1H), 7.75 (m, 2H), 7.65 (s, 1H), 7.60 (t, 1H), 7.45 (m, 2H), 6.95 (d, 1H), 6.55 (d, 1H), 5.30 (s, 2H), 4.55 (br, 1H), 2.52 (m, 2H), 2.05 (s, 3H), 1.84 (m, 2H), 1.70 (m, 2H), 1.51 (m, 2H). 13C NMR (100 MHz, CDCl3) δ 162.7, 157.9, 157.0, 151.9, 151.6, 149.1, 140.1, 135.9, 131.7, 129.7, 127.9, 123.0, 121.1, 115.7, 111.2, 51.4, 50.3, 44.6, 28.7, 22.1. MS (ESI+) 467/469 (M+1H+).

1. temperatureWhen the mixture had cooled down it
2. customVery little had precipitated
3. customwhen evaporation of ether
4. customwas formed
5. filtrationfiltered off
6. customThe material was recrystallized from ethanol
7. filtrationfiltered
8. washwashed with ethanol
9. customdried