反应详情

6.5 g of ethyl 3-benzoylamino-3-isobutyrylpropionate, 30 ml of dimethylformamide and 4.8 g of phosphorus oxychloride are treated in the same manner as described in Example 1. 5.0 g of ethyl 2-(2-phenyl-5-isopropyl-4-oxazoly)acetate are thereby obtained. Yield: 81.4%.