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Updated: Jul 22, 2026

Synthesis of Hypervalent Iodonium Alkynyl Triflates for the Application of Generating Cyanocarbenes
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Published on: September 8, 2013

合成,分子结构和可分离的silylenoid与三坐标的反应性

Gregory Molev1, Dmitry Bravo-Zhivotovskii, Miriam Karni

  • 1Department of Chemistry and the Lise Meitner Minerva Center for Computational Quantum Chemistry, Technion-Israel Institute of Technology, Haifa 32000, Israel. chrbrzh@tx.technion.ac.il

Journal of the American Chemical Society
|March 2, 2006
PubMed
概括

研究人员合成了第一个三坐标氧化,一种具有独特反应性的化合物. 这种新型化合物表现出核友和电友的行为,扩大了化学.

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Chirality is most prevalent in carbon-based tetrahedral compounds, but this important facet of molecular symmetry extends to sp3-hybridized nitrogen, phosphorus and sulfur centers, including trivalent molecules with lone pairs. Here, the lone pair behaves as a functional group in addition to the other three substituents to form an analogous tetrahedral center that can be chiral.
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The Diels–Alder reaction brings together a diene and a dienophile to form a six-membered ring. Both components have unique characteristics that influence the rate of the reaction.
Characteristics of the diene
Conformation
The simplest example of a diene is 1,3-butadiene, an acyclic conjugated π system. At room temperature, the molecule exists as a mixture of s-cis and s-trans conformers by virtue of rotation around the carbon–carbon single bond. Although the s-trans isomer is more stable, the...