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Updated: Jan 1, 2026

Facile Preparation of 2Z,4E-Dienamides by the Olefination of Electron-deficient Alkenes with Allyl Acetate
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热C1-C5二基循环化对恩迪因因的热C1-C5

Chandrasekhar Vavilala1, Neal Byrne, Christina M Kraml

  • 1Department of Chemistry, Princeton University, Princeton, New Jersey 08544, USA.

Journal of the American Chemical Society
|September 19, 2008
PubMed
概括

计算和实验研究表明,以基替代的1,2-二乙基比伯格曼反应更有利于C1-C5循环. 这种电子效应使得C1-C5循环化成为热解中的重要途径.

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Selection Rules: Thermal Activation
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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