Stereoselective preparation of conjugated E-enynes from E-vinylic tellurides and terminal alkynes via Sonogashira cross-couplingElectronic supplementary information (ESI) available: spectroscopic data for all new compounds as well as detailed experimental procedures. See http://www.rsc.org/suppdata/ob/b4/b401059k/
作者:Gilson Zeni、Diego Alves、Jesus M. Pena、Antonio L. Braga、Helio A. Stefani、Cristina W. Nogueira
DOI:10.1039/b401059k
日期:——
E-Vinylic tellurides undergo a direct cross-coupling reaction with terminal alkynes in the presence of palladium(II)/CuI in Et(3)N at room temperature to give E-enynes in good yields. The methodology represents a general and efficient protocol for carrying out the synthesis of E-enynes under mild conditions with complete retention of configuration.