Isotellurazolo[1,5-a]tellurazoles are disclosed. These heterocycles can be prepared by reacting a diarylformamidine with an aromatic tellurazolium salt which is substituted at its 2 ring position with a methine group precursor. The product heterocycles are useful directly for their blue light absorption and in forming stable heterocyclic nuclei containing compounds, such as a photographic addenda.
已披露Isotellurazolo[1,5-a]tellurazoles。这些杂环可以通过将二芳基甲酰胺与芳基
碲唑盐反应制备,该盐在其2环位置被甲烯基前体取代。所得的产物杂环可直接用于其蓝光吸收以及形成含有稳定杂环核的化合物,如摄影添加剂。