Rearrangements of Tricyclo[5.3.1.0<sup>1,7</sup>]undecatrienide Anion: Circumambulation and Cleavage of the Cyclopropane Ring
作者:Mitsunori Oda、Yoshimi Masaki、Yoshimi Okazaki、Takanori Kajioka、Yasufumi Morita、Ryuta Miyatake、Shigeyasu Kuroda
DOI:10.1246/bcsj.71.1959
日期:1998.8
structure was confirmed by X-ray crystallographic analysis. A driving force of the circumambulation was thought to be the creation of conjugation between the cycloheptadienide part and the five-membered ring olefin in the product on the basis of the facts that a circumambulatory rearrangement in the opposite direct...
三环[5.3.1.01,7]十一碳-2,4,9-三烯与丁基锂在-78°C的四氢呋喃-六甲基磷酰胺中反应,随后用水或甲醇淬灭得到的暗红色反应混合物,得到三环[6.3。 0.01,3]十一碳-5,7,9-三烯 (4) 作为唯一的可分离产物。还发现在相同条件下用氧化氘猝灭阴离子溶液会导致氘原子的立体选择性结合。另一方面,在将阴离子溶液加热至 0°C 后用水将其淬灭,得到二氢甲基甘菊烯的混合物。获得了重排烃 4 与 4-苯基-3H-1,2,4-三唑啉-3,5(4H)-二酮的环加合物,并通过 X 射线晶体分析证实了其结构。