Other Compounds containing Tellurium

The first compound containing a telluroazepine ring, ll-(4-methylphenyl) dibenzo[d,/][l,4]telluroazepine 62 was obtained in 21% yield upon heating p-xylene solution of 9-azido-9-(4-methylphenyl)telluroxanthene at 130-140°C (87KGS279). Other products of this pyrolitic process are the imine 63 (32% yield) and phenanthridine 64 (21% yield). Formation of the latter implies extrusion of the tellurium atom from dibenzotelluroazepine 62. 

Lactam Antibiotics, Other Sulfur-containing Natural Products, and Related Compounds , J. G. Gleason and W. D. Kingsbury, in Organic Compounds of Sulphur, Selenium and Tellurium , ed. D. R. Hogg, Royal Society of Chemistry, London, 1979, vol. 5, pp. 454-480. 

Ligands Other than Oxygen and Sulfur. See Sec. 3.1.7, Coordination Compounds, for acids containing ligands other than oxygen and sulfur (selenium and tellurium). 

---