1,5-Cyclooctadiyne. Preparation and Reactivity
作者:Else Kloster-Jensen、Jakob Wirz
DOI:10.1002/hlca.19750580121
日期:——
1,5-Cyclooctadiyne 1 was isolated in 2 percent yield from polymerized butatriene 5. Other oligomers of 5 were detected in the reaction mixture by combined GLC./MS. analysis but have not been identified. Diels-Alder adducts of 1 with two equivalents of 1,3-butadiene and of 2,3-dimethyl-1,3-butadiene have been prepared. In the presence of strong base 1 isomerized to cyclooctatetraene. 5 was reformed
从聚合的丁三烯5中以2%的产率分离出1,5-环辛二炔1。通过组合的GLC./MS在反应混合物中检测到其他5的低聚物。分析,但尚未确定。狄尔斯-阿德耳加合物1与1,3-丁二烯的两个当量和2,3-二甲基-1,3-丁二烯的已经制备。在强碱1存在下,异构化为环辛酸酯。5通过1的光解进行了重整。尝试制备1的过渡金属配合物失败。环应变和环过环相互作用对1反应性的影响讨论。预测5到1的二聚化会强烈放热。