反应详情

A mixture of 1-(4-fluorophenyl)-5-(2-methyl-5-tetrazolyl)-3-(1,2,3,6-tetrahydro-4-pyridinyl)-1H-indole (21a) (4 g), 1-(2-chloroethyl)imidazolidin-2-one (1.8 g), potassium carbonate (2.1 g) and potassium iodide (0.5 g) in MIBK (80 mL) was boiled at reflux for 20 hours. After cooling, inorganic salts were filtered off and the solvent evaporated in vacuo. The title compound crystallised from ethyl acetate. Yield 3.0 g. Mp 201-203° C. 1H NMR (CDCl3): δ 2.60-2.70 (m, 4H), 2.80 (t, 2H), 3.30 (broad s, 2H), 3.35-3.45 (m, 4H), 3.55 (t, 2H), 4.40 (s, 3H), 4.65 (s, 1H), 6.35 (broad s, 1H), 7.20 (t, 2H), 7.25 (s, 1H), 7.40-7.50 (m, 3H), 7.95 (d, 1H), 8.25 (s, 1H); MS m/z (%): 487 (MH+, 12), 142 (49), 113 (100).

1. temperatureat reflux for 20 hours
2. temperatureAfter cooling
3. filtrationinorganic salts were filtered off
4. customthe solvent evaporated in vacuo
5. customThe title compound crystallised from ethyl acetate