Cyclobuta[1,2-d]benzyne. Generation, trapping, and dimerization to 2,3:6,7-dicyclobutabiphenylene
作者:R. L. Hillard、K. P. C. Vollhardt
DOI:10.1021/ja00428a031
日期:1976.6
Cyclobuta(1,2-d)benzyne has been generated from 4,5-bromoiodobenzocyclobutene and magnesium or butyllithium. The transient reactive species can be trapped with furan as the Diels--Alder adduct. In the absence of trapping agents dimerization occurs to 2,3:6,7-dicyclobutabiphenylene, a novel strained benzenoid hydrocarbon with distinctly olefinic properties.
Cyclobuta(1,2-d) 苄已由 4,5-溴碘苯并环丁烯和镁或丁基锂生成。瞬态反应性物质可以用呋喃作为 Diels-Alder 加合物捕获。在没有捕集剂的情况下,二聚反应发生在 2,3:6,7-二环丁二联苯上,这是一种具有明显烯烃特性的新型张力苯系烃。