Advanced search
Start date
Betweenand
Related content
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

Full text
Author(s):
Stefani, Helio A. [1] ; Pena, Jesus M. [1] ; Zukerman-Schpector, Julio [2] ; Tiekink, Edward R. T. [3]
Total Authors: 4
Affiliation:
[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
Total Affiliations: 3
Document type: Journal article
Source: Journal of the Brazilian Chemical Society; v. 22, n. 8, p. 1439-U109, 2011.
Web of Science Citations: 3
Abstract

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)