Phenol → 6-(4-Chlorophenyl)-3-({6-[(1-methylpiperidin-4-yl)oxy]pyridin-2-yl}methyl)thieno[3,2-d]pyrimidin-4(3H)-one

Participants

Reaction Conditions

Reaction Steps

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+).

Provenance & Evidence