The present invention relates to the use of telluroxides as mild and selective oxidizing agents serving to oxidize certain functions, notably >C.dbd.S groups, in the presence of other relatively easily oxidized functions which remain unaffected; telluroxides of interest as oxidizing agents include, for example, compounds of the formula: ##STR1## wherein R and R.sup.1, which may be the same or different, each represent an optionally substituted aryl or heterocyclic group; or R and R.sup.1 together with the tellurium atom therebetween represent a heterocyclic ring, which may contain one or more further heteroatoms, and which may carry substituents and/or fused aromatic rings.
本发明涉及
碲氧化物作为温和且选择性的氧化剂的用途,用于氧化特定功能,特别是>C.dbd.S基团,在其他相对容易被氧化的功能存在的情况下保持不受影响;作为氧化剂感兴趣的
碲氧化物包括例如下式的化合物:##STR1## 其中R和R.sup.1,可以相同也可以不同,分别代表可选择地取代的芳基或杂环基团;或者R和R.sup.1与其之间的
碲原子一起代表一个杂环环,该环可以含有一个或多个进一步的杂原子,并且可以携带取代基和/或融合的芳香环。