反应详情

温度

80 °C

A mixture of 1.28 g (10 mmol) of 1,4-diazepane-1-carbaldehyde and 0.33 g (11 mmol) of paraformaldehyde in 13 ml of dioxane is heated at 80° C. until a homogeneous solution is obtained. 1.70 g (10 mmol) of 3-trifluoromethylphenylacetylene in solution in 7 ml of dioxane and 1.81 g (10 mmol) of copper diacetate are added. The mixture is heated at 80° C. for 4 hours. It is cooled to ambient temperature and diluted with 75 ml of ethyl acetate. The organic phase is washed with 25 ml of 30% ammonia solution and with saturated aqueous sodium chloride solution. It is dried over sodium sulphate and evaporated to dryness. The residue is purified by chromatography on silica gel, eluting with a 98/2/0.2 then 96/4/0.4 and 94/6/0.6 mixture of dichloromethane, methanol and 30% ammonia, to give 2.67 g of product in the form of a yellow oil.

1. customis obtained
2. temperatureThe mixture is heated at 80° C. for 4 hours
3. temperatureIt is cooled to ambient temperature
4. washThe organic phase is washed with 25 ml of 30% ammonia solution and with saturated aqueous sodium chloride solution
5. dry with materialIt is dried over sodium sulphate
6. customevaporated to dryness
7. customThe residue is purified by chromatography on silica gel
8. washeluting with a 98/2/0.2
9. addition96/4/0.4 and 94/6/0.6 mixture of dichloromethane, methanol and 30% ammonia