How is tert-Butyl (1,3-dioxo-3a,4,7,7a-tetrahydro-1H-4,7-methanoisoindol-2(3H)-yl) carbonate (CAS: 64205-15-8) typically synthesized?

This compound can be synthesized via a multistep process involving the preparation of the parent compound followed by the introduction of the tert-butyl group. Common methods include ring-opening reactions of cyclic precursors with tert-butyl chloroformate, using a catalyst such as triphenylphosphine to improve selectivity and yield.