title: Reversible 1,4-cycloaddition of singlet oxygen to N-substituted 2-pyridones: 1,4-endoperoxide as a versatile chemical source of singlet oxygen.
abstract: N-substituted pyridones (1) easily undergo singlet oxygenation to give exclusively the corresponding endoperoxides (2), which decompose to give pyridones again while liberating 1O2 in high yield.
authors.affiliation: Department of Materials Science, Kanagawa University, Hiratsuka, Kanagawa, 259-1293, Japan. matsumo-chem@kanagawa-u.ac.jp
authors.forename: Masakatsu
authors.initials: M
authors.lastname: Matsumoto
authors.forename: Masayo
authors.initials: M
authors.lastname: Yamada
authors.forename: Nobuko
authors.initials: N
authors.lastname: Watanabe