How is 4-{[(2,5-Dioxo-1-pyrrolidinyl)oxy]carbonyl}benzaldehyde (CAS: 60444-78-2) typically synthesized?

4-{[(2,5-Dioxo-1-pyrrolidinyl)oxy]carbonyl}benzaldehyde is synthesized through a multi-step process involving the condensation of 2,5-dioxopyrrolidine-1-carboxylic acid with benzaldehyde. The reaction typically requires a dehydrating agent and is carried out under mild conditions. The yield is around 70-80%, and the purity can be improved through recrystallization.