反应详情

To a mixture of 60.6 g of product from Example 52 in 750 ml of methylene chloride and 0.636 g of dimethylformamide is added, dropwise, 33.1 g of oxalyl chloride. The reaction is stirred at room temperature for 18 hours. The mixture is concentrated in vacuo, redissolved in diethyl ether, passed through a pad of diatomaceous earth and concentrated in vacuo to give 63.81 g of the desired product.

1. additionis added
2. concentrationThe mixture is concentrated in vacuo
3. dissolutionredissolved in diethyl ether
4. concentrationconcentrated in vacuo