Formation of linear tetramers of diarylalkynes by the Zr/Cr system.
Formation of linear tetramers of diarylalkynes by the Zr/Cr system.
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DOI：
10.1021/ja052864w
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发表时间：
2005-08
影响因子：
15
通讯作者：
Tamotsu Takahashi;Yuanhong Liu;Atsushi Iesato;Shinji Chaki;K. Nakajima;K. Kanno
中科院分区：
文献类型：
--
作者：
Tamotsu Takahashi;Yuanhong Liu;Atsushi Iesato;Shinji Chaki;K. Nakajima;K. Kanno
二芳基炔类化合物与Cp2ZrBu2反应，再经CrCl3处理得到线性四聚二芳基炔类化合物，(1E，3E，5E，7E)-八碳四烯。另一方面，二烷基炔与氰化物和异氰酸酯反应生成环化产物，如吡啶和吡啶酮，而不是相应的八碳四烯。
The reaction of diarylalkynes with Cp2ZrBu2 and successive treatment with CrCl3 afforded linear tetramers of diarylalkynes, (1E,3E,5E,7E)-octatetraenes. On the other hand, dialkylalkynes did not give the corresponding octatetraenes but cyclized products, such as pyridines and pyridones, by the reaction with nitriles and isocyanates.