反应详情

A mixture of 5′-tert-butoxycarbonylamino-2′-methyl-biphenyl-4-carboxylic acid (500 mg), 4-(1,1-dioxo-1lambda*6*-thiomorpholin-4-ylmethyl) -phenylamine (367 mg), triethylamine (0.64 ml) and O-benzotriazol-1-yl-N,N,N′,N′-tetramethyluronium hexafluorophosphate (869 mg) in dry DMF (20 ml) was stirred at 20 C for 118 h. The mixture was then partitioned between water and dichloromethane. The dried extracts were evaporated and the residue purified on silica gel. Elution with ethyl acetate:petrol; 1:1 removed high Rf impurities and further elution with ethyl acetate gave the title compound as a pale yellow solid (693 mg).

1. customThe mixture was then partitioned between water and dichloromethane
2. customThe dried extracts were evaporated
3. customthe residue purified on silica gel
4. washElution with ethyl acetate
5. wash1:1 removed high Rf impurities and further elution with ethyl acetate