反应详情

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0 °C

6-[(Cyclopropylmethoxy)methyl]-2-sulfanylidene-1,2,3,4-tetrahydropyrimidin-4-one (10.3 g, 48.5 mmol) was added to bromoacetic acid (21.5 g, 155 mmol, 3.2 eq) in EtOH (108 mL) and H2O (441 mL). The reaction mixture was refluxed for 16 h then cooled down to rt and basified to pH˜10 with sodium hydroxide (3 M, aq). The mixture was concentrated in vacuo and hydrochloric acid (aq, 10%) was added. The mixture was cooled to 0° C. The precipitate was isolated by filtration and dried to give the title compound as a solid (3.5 g, 37%).

1. temperatureThe reaction mixture was refluxed for 16 h
2. concentrationThe mixture was concentrated in vacuo and hydrochloric acid (aq, 10%)
3. additionwas added
4. customThe precipitate was isolated by filtration
5. customdried