作者:Henning Hopf、Helmut Greiving、Christian Beck、Ina Dix、Peter G. Jones、Jean-Pierre Desvergne、Henri Bouas-Laurent
DOI:10.1002/ejoc.200400596
日期:2005.2
the preparation of [n]ladderanes is presented, based on a one-pot [2π+2π] photocycloaddition of [2.2]paracyclophane pseudo-gem bis(polyene) precursors. [3]- and [5]ladderanes could be isolated and were fully characterized, including their X-ray structure analysis. The overall chemical yields from [2.2]paracyclophane as starting material were found to be 53 % ([3]ladderane) and 38 % ([5]ladderane). Preliminary
提出了一种制备 [n] 梯烷的新方法,该方法基于 [2.2] 对环芳烷假宝石双(多烯)前体的单锅 [2π+2π] 光环加成。[3]- 和 [5] 梯烷可以被分离出来并被充分表征,包括它们的 X 射线结构分析。发现以 [2.2] 对环烷为原料的总化学产率为 53%([3] 拉德烷)和 38%([5] 拉德烷)。描述了它们的光致变色特性(从黄色或红色到无色形式的可逆变化)的初步研究。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)