反应详情

To a solution of O-methoxymethyl-N-methyl-N-(2-nitrophenylthio)-β-hydroxytyrosine (20.0 g) in ethyl acetate (100 ml) was added diazomethane in diethyl ether (80 ml). After stirring for 10 minutes, the solvent was removed in vacuo. The residue was put on a silica gel column (MERCK 7734:500 g) and eluted with chloroform to give O-methoxymethyl-N-methyl-N-(2-nitrophenylthio)-β-hydroxytyrosine methyl ester. (threo isomer: 8.82 g, erythro isomer: 6.63 g)

1. customthe solvent was removed in vacuo
2. washeluted with chloroform