反应详情

5.8 g of ethyl 3-benzoylamino-3-(3-thienylcarbonyl)propionate, 30 ml of dimethylformamide and 3.8 g of phosphorus oxychloride are treated in the same manner as described in Example 1. 4.3 g of ethyl 2-[2-phenyl-5-(3-thienyl)-4-oxazolyl]acetate are thereby obtained.