Metallacycle Expansion and Annulation: Access to Tetrazolo-Fused Osmacycles by Reaction of Cyclic Osmium Carbyne with Sodium Azide,Chinese Journal of Chemistry

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Metallacycle Expansion and Annulation: Access to Tetrazolo-Fused Osmacycles by Reaction of Cyclic Osmium Carbyne with Sodium Azide
Chinese Journal of Chemistry ( IF 5.5 ) Pub Date : 2021-09-28 , DOI: 10.1002/cjoc.202100589
Hongjian Wang ₁ , Yu‐Mei Lin ₁ , Siyuan Chen ₁ , Yonghong Ruan ₁ , Haiping Xia _{1,

2}

Affiliation

The reaction of a cyclic osmacarbyne complex with sodium azide led to the formation of a ring expansion-annulation product, a unique tetrazole annulated polycyclic metallacycle. The reaction proceeds by insertion of a nitrogen atom into the metal carbon triple bond and the second azide participating in the [2+3] cycloaddition. The successful isolation and characterization of metalla-azirine complex and metallapyridinium derivative strongly validated the mechanism for the formation of the title complex. The work demonstrates a new strategy to enrich the varieties of aza-metallacyclic species.

中文翻译：

金属环膨胀和环化：通过环状锇卡宾与叠氮化钠的反应获得四氮唑-稠合的Osmacycles

环状锇羰配合物与叠氮化钠的反应导致形成扩环-环化产物，这是一种独特的四唑环化多环金属环。该反应通过将氮原子插入金属碳三键和参与 [2+3] 环加成的第二个叠氮化物而进行。金属-氮杂环络合物和金属吡啶鎓衍生物的成功分离和表征有力地验证了标题络合物的形成机制。这项工作展示了一种丰富氮杂金属环物种种类的新策略。

更新日期：2021-11-15

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