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Updated: Sep 20, 2025

Synthesis of Antiviral Tetrahydrocarbazole Derivatives by Photochemical and Acid-catalyzed C-H Functionalization via Intermediate Peroxides CHIPS
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Synthesis of Antiviral Tetrahydrocarbazole Derivatives by Photochemical and Acid-catalyzed C-H Functionalization via Intermediate Peroxides CHIPS

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基于伊米达异醇的斯蒂尔本衍生物的可逆光环化显然超过非三烯形式

Taichi Muto1, Mihoko Yamada1, Shohei Katao1

  • 1Division of Materials Science, Nara Institute of Science and Technology, 1 8916-5 Takayama, Ikoma, Nara, 630-0192, Japan.

Chemistry (Weinheim an der Bergstrasse, Germany)
|May 23, 2025
PubMed
概括

研究人员合成了一种基于伊米达异能醇的新型stilbene类似物. 这种化合物表现出不寻常的光环化,这是二甲基乙烯 (DAE) 中的一个关键反应,由特定的轨道对称驱动.

关键词:
伊米达 (Imidazole) 是一种药物.介合体形式的介合体形式.这是一种光染色主义.通过光环化进行光环化.

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The absorption of UV–visible light by conjugated systems causes the promotion of an electron from the ground state to the excited state. Consequently, photochemical electrocyclic reactions proceed via the excited-state HOMO rather than the ground-state HOMO. Since the ground- and excited-state HOMOs have different symmetries, the stereochemical outcome of electrocyclic reactions depends on the mode of activation; i.e., thermal or photochemical.
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Thermal Electrocyclic Reactions: Stereochemistry01:17

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The stereochemistry of electrocyclic reactions is strongly influenced by the orbital symmetry of the polyene HOMO. Under thermal conditions, the reaction proceeds via the ground-state HOMO.
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Conjugated systems containing an even number of π-electron pairs undergo a conrotatory ring closure. For example, thermal electrocyclization of (2E,4E)-2,4-hexadiene, a conjugated diene containing two π-electron pairs, gives trans-3,4-dimethylcyclobutene.
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