A facile, general route to adamantanophanes. Synthesis and conformational behavior of [4.4](1,3)adamantanophan-trans,trans-1,8-diene
作者:Kata Mlinarić-Majerski、Dražen Pavlović、Željko Marinić
DOI:10.1016/0040-4039(96)00523-0
日期:1996.7
Ramber-Bäcklund rearrangement of disulfone 2 leads to the ring-contracted 4,6:11,13-di(1,3-adamantano)cyclotetradeca-trans,trans-1,8-diene (3a) along with 4,6:11,13-di(1,3-adamantano)cyclotetradeca-cis,trans-1,8-diene (3b) and 4,6:12,14-di(1,3-adamantano)-8,10-dehydro-9,9-dichlorocyclopentadeca-1-diene (4) as a minor products. The ring inversion of 3a can most reasonably be interpreted in terms of
二砜2的Ramber-Bäcklund重排导致环缩合的4,6:11,13-di(1,3-金刚烷酸)环十四烷-反式,反式-1,8-二烯(3a)以及4,6:11 ,13-二(1,3- adamantano)cyclotetradeca-顺,反式-1,8-二烯(图3b)和4,6-:12,14 -二(1,3- adamantano)-8,10脱氢-9-作为次要产物,9,二氯环戊基-1-二烯(4)。3a的环反转可以最有效地解释为两个具有有效C 2h对称性的构象异构体之间的平衡过程。