Cobalt(I)-catalyzed [6+2] cycloadditions of cyclooctatetra(tri)ene with alkynes

被引:46
|
作者
Achard, M [1 ]
Mosrin, M [1 ]
Tenaglia, A [1 ]
Buono, G [1 ]
机构
[1] Univ Aix Marseille P Cezanne, Lab Synth Asymetr, CNRS,EGIM, UMR 6180,Fac Sci & Tech St Jerome, F-13397 Marseille 20, France
关键词
D O I
10.1021/jo052630v
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
The cobalt-catalyzed [6+2] cycloaddition of cyclooctatetraene 1 with alkynes 3 affords monosubstituted bicyclo[4.2.2]-deca-2,4,7,9-tetraenes 4 in fair to good yields. Due to the valence tautomerism, 1,3,5-cyclooctatriene 2, in equilibrium with bicyclo[4.2.0]octa-2,4-diene A, and alkynes 3 are converted to 10 and 11 according to [6+2] and [4+2] cycloadditions, respectively.
引用
收藏
页码:2907 / 2910
页数:4
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