反应详情

A mixture of 13.2 g of product from Example 86, 6.4 g of oxalyl chloride, 225 ml of methylene chloride and 5 drops of dimethylformamide is stirred at room temperature for 17 hours. The solvent is concentrated in vacuo, the residue is dissolved in ether, filtered through diatomaceous earth and concentrated in vacuo to give 13.5 g of the desired product.

1. concentrationThe solvent is concentrated in vacuo
2. dissolutionthe residue is dissolved in ether
3. filtrationfiltered through diatomaceous earth
4. concentrationconcentrated in vacuo