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Updated: Jul 26, 2025

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揭示光源和硬质因素对 [2+2] 异环添加反应的影响

Javier Mateos1, Francesco Rigodanza1, Paolo Costa1

  • 1Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy.

Nature synthesis
|June 16, 2023
PubMed
概括

研究人员探索了英多尔和之间的光驱动反应,发现了控制立体选择性的中间体. 这种机理性洞察力允许精确控制帕特诺-布基反应中的二聚体选择性.

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Cycloadditions are one of the most valuable and effective synthesis routes to form cyclic compounds. These are concerted pericyclic reactions between two unsaturated compounds resulting in a cyclic product with two new σ bonds formed at the expense of π bonds. The [4 + 2] cycloaddition, known as the Diels–Alder reaction, is the most common. The other example is a [2 + 2] cycloaddition.
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Thermal cycloadditions are reactions where the source of activation energy needed to initiate the reaction is provided in the form of heat. A typical example of a thermally-allowed cycloaddition is the Diels–Alder reaction, which is a [4 + 2] cycloaddition. In contrast, a [2 + 2] cycloaddition is thermally forbidden.
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