反应详情

Diethyl N,N'-(oxydi-p-phenylene)dioxamate (2.0 gm.) is stirred at room temperature for three hours in 1.0 N sodium hydroxide (50 ml.). The solid is collected by filtration and dissolved in water. The pH is adjusted to pH=3 with concentrated hydrochloric acid and the desired product collected by filtration (1.6 gm., mp >320°).

1. filtrationThe solid is collected by filtration
2. dissolutiondissolved in water
3. filtrationthe desired product collected by filtration (1.6 gm., mp >320°)