期刊
AUSTRALIAN JOURNAL OF CHEMISTRY
卷 76, 期 3, 页码 117-129出版社
CSIRO PUBLISHING
DOI: 10.1071/CH23029
关键词
aromatic compounds; meta or [2+3] photocyloaddition; molecular complexity; natural products; ortho or [2+2] photocycloaddition; photocycloaddition; spin multiplicity; terpenes; total synthesis
Photocycloadditions of benzene derivatives with alkenes are important in organic synthesis, especially intramolecular reactions. Competition between meta or [2 + 3] photocycloadditions and ortho or [2 + 2] additions is common. The influence of substitution pattern and spin multiplicity on reaction outcomes is discussed. A topological analysis allows for systematic application of [2 + 3] photocycloadditions in total synthesis of natural products, with corresponding syntheses discussed. Recent research has also focused on [2 + 2] photocycloadditions and consecutive rearrangements in organic synthesis, including approaches in asymmetric synthesis.
Photocycloadditions of benzene derivatives with alkenes play an important role as key steps in organic synthesis. Intramolecular reactions have been most frequently studied in this context. Often, meta or [2 + 3] photocycloadditions take place in competition with ortho or [2 + 2] additions. The influence of the substitution pattern and the spin multiplicity of the excited state on the outcome of these reactions is discussed. A topological analysis permitting a systematic application of the [2 + 3] photocycloadditions to the total synthesis of natural products is presented and a selection of corresponding syntheses is discussed. More recently the [2 + 2] photocycloaddition and consecutive rearrangements on organic synthesis have been published. Some approaches in the context of asymmetric synthesis have also been reported.
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