反应详情

A mixture of 9.05 g of the product of Example 3 and 45 ml of 2N sodium hydroxide is stirred at room temperature for 45 minutes. The solution is filtered, the filtrate is neutralized with 2.5 ml of glacial acetic acid, and diluted with 250 ml of ethanol. The product formed is collected by filtration, washed with ethanol followed by ether and dried to give 7.85 g of the product of the Example as a yellow powder.

1. filtrationThe solution is filtered
2. additiondiluted with 250 ml of ethanol
3. customThe product formed
4. filtrationis collected by filtration
5. washwashed with ethanol
6. customdried