The photochemistry of N-phenyl phthalonimide: Formation of substituted dihydroisocoumarins in the presence of tertiary amines.
作者:Rafael Suau、Ezequiel P. de Inestrosa Villatoro
DOI:10.1016/0040-4020(95)00271-9
日期:1995.5
phthalimide and 3,4-Dihydroisocoumarins were obtained by irradiation of N-phenyl phthalonimide in the presence of tertiaryamines. The δ-lactone structure was demonstrated via an alternative synthesis that gave the isomeric γ-lactone as well. The key steps of the photoreaction, and the role of the amine, oxygen and several potential intermediates are discussed.