反应详情

In 40 ml of acetonitrile was dissolved 661 mg. of N-methyl thiourea. In the solution was suspended 2.9 g of 2-bromo-1-(5-indanyl)-2-(3-pyridyl)ethanone hydrobromide. To the suspension was added dropwise slowly 1 ml of triethylamine. The mixture was then stirred for 2 hours at refluxing temperature, followed by being left standing for cooling. The solvent was then evaporated off. To the residue was added a saturated aqueous solution of sodium hydrogen carbonate. The mixture was subjected to extraction with ethyl acetate. The extract solution was washed with water, dried and, then, the solvent was evaporated off. Recrystallization was conducted from ethyl acetate-isopropylether afforded 1.8 g (80%) of 4-(5-indanyl)-2-methylamino-5-(3-pyridyl)-1,3-thiazole, m.p. 169°-170° C.

1. temperatureat refluxing temperature
2. waitby being left
3. temperaturefor cooling
4. customThe solvent was then evaporated off
5. additionTo the residue was added a saturated aqueous solution of sodium hydrogen carbonate
6. extractionThe mixture was subjected to extraction with ethyl acetate
7. washThe extract solution was washed with water
8. customdried
9. customthe solvent was evaporated off
10. customRecrystallization