title: Photo-induced cycloaddition reactions of α-diketones and transformations of the photocycloadducts.
abstract: Photocycloaddition, along with subsequent transformation of the photocycloadducts, provides expeditious ways to construct various structures. The photo-induced reactions of α-diketones have been reported to proceed via different reaction pathways with the involvement of one or two of the carbonyl groups. Photoinduced reactions of cyclic α-diketones including N-acetylisatin, phenanthrenequinone and isoquinolinetrione with different C=C containing compounds could take place via [2 + 2], [4 + 2] or [4 + 4] photocycloaddition pathways. We have investigated the photoreactions of these cyclic α-diketones with different types of alkenes and alkynes, with a focus on the unusual cascade reactions initiated by the photocycloaddition reactions of these cyclic α-diketones and the applications of these photocycloaddition reactions along with the transformation of the photocycloadducts. In this paper, we discuss the diverse photo-cycloaddition pathways found in the photocycloaddition of o-diones leading to various photocycloadducts and the potential applications of these reactions via further transformation reactions of the adducts.
authors: School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
authors: Chengmei
authors: C
authors: Huang
authors: Mengmeng
authors: M
authors: Zheng
authors: Jianhua
authors: J
authors: Xu
authors: Yan
authors: Y
authors: Zhang
mesh_terms: D061565:Cycloaddition Reaction; D007659:Ketones / Q000138:chemical synthesis / Q000737:chemistry*; D010777:Photochemistry; D013237:Stereoisomerism
chemical_list: D007659:Ketones