反应详情

温度

50 °C

660 μL (4.0 mmol, 1.5 eq) of heptyl isocyanate are added to a solution of 805 mg (2.72 mmol, 1 eq) of ethyl (E)-3-(2′-methyl-5′-methylaminobiphenyl-4-yl)acrylate in 8 mL of a 7/1 dichloromethane/triethylamine mixture. The reaction medium is stirred at 50° C. for 12 hours and then hydrolyzed with water and extracted with ethyl acetate. The organic phases are combined, washed with sodium chloride solution and dried over sodium sulfate. The solvents are evaporated off and the residual oil is chromatographed on silica (7/3 heptane/ethyl acetate). 920 mg of ethyl (E)-3-[5′-(3-heptyl-1-methylureido)-2′-methylbiphenyl-4-yl]acrylate are obtained in oil form. Yield=77%

1. extractionhydrolyzed with water and extracted with ethyl acetate
2. washwashed with sodium chloride solution
3. dry with materialdried over sodium sulfate
4. customThe solvents are evaporated off
5. customthe residual oil is chromatographed on silica (7/3 heptane/ethyl acetate)