反应详情

A mixture of 3.40 g (17.3 mmol) 1-allyloxy-4-chloromethyl-2-methyl-benzene and 1.45 g (19.0 mmol) thiourea in 5.0 ml ethanol was heated to reflux for 7 h. Solvents were distilled off and the crystalline residue was washed with cold ethanol and isolated by filtration. After addition of 5.0 ml ethanol, 2.0 ml water and 1.4 ml 25% aqueous ammonia, the mixture was heated to reflux for 2 h. Ethanol was distilled off, then acidified with 0.5 ml half conc. HCl and extracted with ethyl acetate. The solution was dried over MgSO4 and solvents were removed in vacuum to yield 1.99 g (59%) (4-allyloxy-2-methyl-phenyl)-methanethiol as nearly colourless oil, which was used immediately.

1. temperaturewas heated
2. temperatureto reflux for 7 h
3. distillationSolvents were distilled off
4. washthe crystalline residue was washed with cold ethanol
5. customisolated by filtration
6. temperaturethe mixture was heated
7. temperatureto reflux for 2 h
8. distillationEthanol was distilled off
9. extractionextracted with ethyl acetate
10. dry with materialThe solution was dried over MgSO4 and solvents
11. customwere removed in vacuum