Thiacrown Ethers with Oxygen and Sulfur for Coordination: Formation of the Pd and Pt Complexes and Pseudorotaxane with Dialkylammonium
作者:Hiroyuki Nagai、Yuji Suzaki、Kohtaro Osakada
DOI:10.1002/ejic.201402465
日期:2014.9
-ethers with eight oxygen or sulfur atoms within the 24-menbered ring have been synthesized by using 1,2-benzenedithiol and 2-hydroxythiophenol as the starting materials. The thia[24]crown ethers form [2]pseudorotaxanes with dibenzylammonium salts, the association constants of which vary depending on the numbers and positions of the sulfur and oxygen atoms. The [2]pseudorotaxane of 1,4-dithiadibenzo[24]crown-8-ether
以 1,2-苯二硫醇和 2-羟基苯硫酚为原料合成了单-、二-三-和四噻二苯并[24]冠-8-醚,在 24 位环内有 8 个氧或硫原子。硫杂 [24] 冠醚与二苄基铵盐形成 [2] 假轮烷,其缔合常数随硫和氧原子的数量和位置而变化。1,4-二噻二苯并[24]冠-8-醚(1,4-DTC)的[2]假轮烷通过加入[PdCl2(cod)转化为Pd配合物[PdCl2(1,4-DTC)] )] (cod = 1,5-环辛二烯),伴随着二苄基铵的释放。随后向混合物中加入 PPh3 导致 [2] 假轮烷的再生。[2] 假轮烷由 1 组成,