Synthesis of 1,3-diynes via detelluration of bis(ethynyl)tellurides

Autor(es)

Stefani, Helio A. ^[1] ; Pena, Jesus M. ^[1] ; Zukerman-Schpector, Julio ^[2] ; Tiekink, Edward R. T. ^[3]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Fac Ciencias Farmaceut, Sao Paulo - Brazil

^[2] Univ Fed Sao Carlos, Dept Quim, BR-13565905 Sao Carlos, SP - Brazil

^[3] Univ Malaya, Dept Chem, Kuala Lumpur 50603 - Malaysia

• Tipo de documento: Artigo Científico
• Fonte: Journal of the Brazilian Chemical Society; v. 22, n. 8, p. 1439-U109, 2011.
• Citações Web of Science: 3

Resumo

The synthesis of symmetric conjugated diyne systems with electron-withdrawing or electron-donating substituents via a palladium-catalyzed detelluration of bis(arylethynyl)tellurides and bis(alkylethynyl)tellurides is described. This procedure is effected under atmospheric conditions in DMF using Pd(OAc)2 as a catalyst and AgOAc as an additive in the presence of triethylamine. This route offers efficient access to conjugated diyne systems in short reaction time. X-ray crystallographic structure and solid-state conformation of bis(p-tolylethynyl)telluride show a supramolecular chain aligned along the b axis, sustained by C-H...π interactions. (AU)

• Processo FAPESP: 07/59404-2 - Reações entre sais de potássio de organotrifluoroboratos e espécies eletrofílicas de telúrio e haletos orgânicos
• Beneficiário: Helio Alexandre Stefani
• Modalidade de apoio: Auxílio à Pesquisa - Temático