CYCLOADDITIONS - DEFINITION CLASSIFICATION AND CHARACTERIZATION
CYCLOADDITIONS - DEFINITION CLASSIFICATION AND CHARACTERIZATION
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DOI：
10.1002/anie.196803211
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发表时间：
1968-01-01
影响因子：
16.6
通讯作者：
HUISGEN, R
中科院分区：
文献类型：
--
作者：
HUISGEN, R
越来越多的关于环加成的出版物表明，这种一般类型的反应值得与更广为人知的取代、消除和加成一起占有一席之地。现象世界并没有为我们提供定义和分类原则。这些都是由科学家创造的，并非没有任意性。建议为环加成使用术语[1]。这些反应并不都通过相同的机制进行。由于有关反应机理的想法可能会随着新标准的引入而改变，因此仅根据机理进行定义和分类是短视的。因此，环加成的定义将不仅仅局限于具有循环电子位移的多中心过程。
The growing volume of publications on cycloadditions indicates that this general type of reaction merits a place beside the better‐known substitutions, eliminations, and additions. The world of phenomena does not provide us with definition and classification principles. These are created by the scientist and are not free from arbitrariness. A terminology[1]is suggested for cycloadditions. These reactions do not all proceed by the same mechanism. Since ideas about reaction mechanism can change with the introduction of new criteria, it is shortsighted to base definitions and classifications on mechanism alone. Consequently, the definition of cycloadditions will not be restricted simply to multi‐center processes with a cyclic electron shift.