反应详情

9.5 g of methyl 2-benzyloxy-5-(2-ethoxy-2-hydroxy-acetyl)-benzoate and 3.1 g of 1,1-dimethyl-3-[1,2,4]triazol-1-yl-propylamine are reacted and worked up analogously to the method described for Example 2a. The crude product is dissolved in 100 mL 95% ethanol and combined with an ethanolic solution of 1.8 g of oxalic acid. After the addition of a crystallisation aid the precipitated product is separated off and washed. Yield: 8 g (64%, bisoxalate), m.p.=220-222° C.

1. additionAfter the addition of a crystallisation aid the precipitated product
2. customis separated off
3. washwashed