反应详情

To a mixture of 30.0 g of product from Example 47 in 300 ml of methylene chloride and 10 drops of dimethylformamide is added dropwise 15.67 g of oxalyl chloride. The reaction is stirred at room temperature for 18 hours and concentrated in vacuo. The residue is crystallized from diethyl ether to give 31.3 g of the desired product as a white solid.

1. concentrationconcentrated in vacuo
2. customThe residue is crystallized from diethyl ether