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Updated: Jun 21, 2025

Isolating Free Carbenes, their Mixed Dimers and Organic Radicals
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螺旋式多环碳化合物具有开单片基态和两极性氧化还原行为

Qing Jiang1, Hui Tang1, Yuchen Peng1

  • 1College of Chemistry and Bioengineering, Hunan University of Science and Engineering Yongzhou 425100 China qjiang198@163.com.

Chemical science
|July 12, 2024
PubMed
概括

合成了两种新的螺旋状多环碳化合物,具有开放的二基性质. 这些化合物表现出独特的电子特性,为先进的有机电子和自旋电子应用铺平了道路.

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Electrocyclic reactions are reversible reactions. They involve an intramolecular cyclization or ring-opening of a conjugated polyene. Shown below are two examples of electrocyclic reactions. In the first reaction, the formation of the cyclic product is favored. In contrast, in the second reaction, ring-opening is favored due to the high ring strain associated with cyclobutene formation.
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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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