反应详情

温度

80 °C

18-Crown-6 (5.3 g, 0.020 mol) and potassium cyanide (1.3 g, 0.020 mol) were added, respectively, to a solution of the product from step c) (6.7 g, 0.013 mol) in 50 mL of DMSO. The reaction mixture was heated at 80° C. overnight, cooled to room temperature, diluted with water (150 mL) and extracted with ethylacetate (3×150 mL). The combined organic extracts were washed with brine (200 mL), dried with MgSO4, and evaporated in vacuo to give the crude product that was purified by column chromatography (SiO2) using 1-100% ethylacetate-hexane gradient to give the subtitle compound (2.1 g, yield: 44%). MS calculated for C17H17BrN2S +H: 361, observed: 361 and 363.

1. temperaturecooled to room temperature
2. extractionextracted with ethylacetate (3×150 mL)
3. washThe combined organic extracts were washed with brine (200 mL)
4. dry with materialdried with MgSO4
5. customevaporated in vacuo
6. customto give the crude product that
7. customwas purified by column chromatography (SiO2)