A Simple One-Pot Synthesis of [1]Benzotelluro[3,2-b][1]-benzotellurophenes and its Selenium and Sulfur Analogues from 2,2′-Dibromodiphenylacetylene [1]

Article abstract of DOI:10.1002/jhet.5570350337

Treatment of 2, 2′-dibromodiphenylacetylene 7 with tert-butyllithium followed by tellurium insertion resulted in intramolecular ring closure to afford [1]benzotelluro[3,2-b][1]benzotellurophene 8a. Similarly, [1]benzoseleno-[3,2-b][1]benzoselenophene 8b a