Pnictogen-directed synthesis of discrete disulfide macrocycles
作者:Mary S. Collins、Matthew E. Carnes、Aaron C. Sather、Orion B. Berryman、Lev N. Zakharov、Simon J. Teat、Darren W. Johnson
DOI:10.1039/c3cc43524e
日期:——
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 1H-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.