Telluroxanes: Synthesis, structure and applications

A tellura-Baeyer–Villiger oxidation: one-step transformation of tellurophene into chiral tellurinate lactone

“…12 For instance, the telluroxides usually exist as dimers owing to the strong intermolecular O→Te SBIs. [64][65][66][67] Therefore, compound 2 can be regarded as a dimer of mono-2 formed through the intermolecular SBIs between Te=O bond (Scheme 2). Accordingly, the two kinds of Te-O bonds in "Te2O2" can be reasonably assigned to Te=O (1.91(1) Å) and O→Te (2.09(1) Å).…”

Large Telluroxane Bowls Connected by a Layer of Iodine Ions

“…Two excellent reviews comprise synthetic routes, general structural patterns and applications of this class of compounds having at least one covalent tellurium‐oxygen bond. [ 1 , 2 ] But these recent summaries make also obvious that hitherto relatively little is known about the structural chemistry particularly of larger telluroxanes. Telluroxanes are commonly prepared by hydrolysis of organotellurium(IV) halides and a strict control of the reaction conditions is required for the preparation of defined molecular products and to avoid polymerization.…”

“…Following such an approach, well defined dimeric, trimeric, hexameric, heptameric or octameric units have been isolated and characterized by crystallography. [ 2 , 3 , 4 , 5 , 6 , 7 , 8 ] Some examples are shown in Scheme 1 .…”

Large Telluroxane Bowls Connected by a Layer of Iodine Ions

“…This means that frequently starting materials with sterically hindered organic residues or additional oxygen or nitrogen donor atoms have been used. Following such an approach, well defined dimeric, trimeric, hexameric, heptameric or octameric units have been isolated and characterized by crystallography [2–8] . Some examples are shown in Scheme 1.…”