University of Oregon and Materials Science Institute, Eugene, Oregon 97403-1253, USA.
Chem Commun (Camb). 2013 Jul 28;49(59):6599-601. doi: 10.1039/c3cc43524e.
Cyclic disulfide macrocycles were rapidly synthesized cleanly and selectively from rigid dithiols via oxidation with iodine when activated by pnictogen additives (As and Sb). Macrocycles were confirmed by (1)H-NMR spectroscopy and X-ray crystallography. A p-xylyl-based disulfide trimer and tetramer crystallized in hollow, stacked columns stabilized by intermolecular, sulfur···sulfur close contacts.
环状二硫环macrocycles 通过氧化反应与碘迅速合成，在磷添加剂（As 和 Sb）的激活下，从刚性二硫醇中干净、选择性地合成。macrocycles 通过（1）H-NMR 光谱和 X 射线晶体学得到证实。基于对二甲苯的二硫三聚物和四聚物在空心、堆叠的柱中结晶，这些柱由分子间的硫···硫近距离接触稳定。
