Di-n-butyl ditelluride

Di-n-butyl ditelluride (typical procedure) n-ButyUithium (8.0 mL, 2.15 M in hexane 17.2 mmol) is added dropwise at room temperature under N2 to a stirred suspension of finely ground elemental Te (1.9 g, 14.9 mmol) in dry THF (50 mL). After 15 min all the Te has been consumed, and the resulting yellowish solution is diluted with H2O (200 mL). 

Air is then bubbled through it to oxidize the lithium tellurolate. The red oily ditelluride that separates is extracted with ethyl ether (200 mL). The organic phase is washed with H2O (2X50 niL), dried (CaCl2) and evaporated to give 2.83 g of a viscous red oil. Distillation of 5.66 g of the crude material prepared in this manner affords 4.87 g of pure di-n-butyl ditelluride (89% based on Te b.p. 103-105°C/0.8 torr). 

---

See also in sourсe #XX -- [ ]

---