Evidence for Intermolecular Interaction between Sulfonium and Sulfide Sulfur Atoms and Its Application to Synthesis of Cyclic Bis(disulfide) Dimer
作者:Kenji Kobayashi、Emiko Koyama、Chihiro Kono、Kazuhiko Namatame、Kazunori Nakamura、Naomichi Furukawa
DOI:10.1021/jo001645k
日期:2001.3.1
of the remote Pummerer reaction of p-bis(alkylthio)-aromatic S-oxides, the intermolecular interaction between the sulfonium and sulfide sulfur atoms is described. (1) In marked contrast to the Pummerer reaction of 1b-d(3) with (CF(3)CO)(2)O (J. Org. Chem. 1999, 64, 3190-3195), the reaction of 3,3',5,5'-tetramesityl-4-(trideuteriomethylsulfinyl)-4'-(methylthio)biphenyl (1a-d(3)) as a sterically hindered
基于对-双(烷硫基)-芳族S-氧化物的远程Pummerer反应,描述了and和硫化物硫原子之间的分子间相互作用。(1)与1b-d(3)与(CF(3)CO)(2)O的Pummerer反应形成鲜明对比(J. Org。Chem。1999,64,3190-3195)作为1b的空间受阻类似物的3',5,5'-四甲叉1-4-4-(间苯二甲基甲基亚磺酰基)-4'-(甲硫基)联苯(1a-d(3))仅给出2a-d(2)。(2)1-(乙硫基)-4-(甲硫基)苯硫醚的两个不对称区域异构体(5a和5b)与(CF(3)CO)(2)O的两个反应均得到单- Pummerer产物6a和6b,双-Pummerer产物7和双硫化物8的比率相似。在两个反应的初始阶段的淬灭产生了相似比例的5a,5b,8和双亚砜10。这些结果表明了硫原子之间的分子间相互作用的平衡。(3)对-双(苄硫基)-芳族S-氧化物16与(CF(3)SO(