反应详情

13 g of methyl 3-(4-chlorobenzoylamino)-3-(3-thienylcarbonyl)propionate, 50 ml of dimethylformamide and 9.6 g of phosphorus oxychloride are treated in the same manner as described in Example 1. 11 g of methyl 2-[2-(4-chlorophenyl)-5-(3-thienyl)-4-oxazolyl]acetate are thereby obtained.