This work was supported partly by Grants-in-Aid for Scientific Research (Nos. 23105512, 20675002, and 21906) from MEXT (Japan). We thank Umicore for generous support in supplying rhodium complexes.
Catalytic [2+2+1] Cross-Cyclotrimerization of Silylacetylenes and Two Alkynyl Esters To Produce Substituted Silylfulvenes†
Article first published online: 16 SEP 2011
Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Angewandte Chemie International Edition
Volume 50, Issue 46, pages 10917–10921, November 11, 2011
How to Cite
Shibata, Y. and Tanaka, K. (2011), Catalytic [2+2+1] Cross-Cyclotrimerization of Silylacetylenes and Two Alkynyl Esters To Produce Substituted Silylfulvenes. Angew. Chem. Int. Ed., 50: 10917–10921. doi: 10.1002/anie.201105517
- Issue published online: 9 NOV 2011
- Article first published online: 16 SEP 2011
- Manuscript Received: 4 AUG 2011
- MEXT (Japan)
- [2+2+1] cross-cyclotrimerization;
- cyclopentadienyl complexes;
Three become one: The cationic rhodium(I) complex [Rh(cod)2]BF4 catalyzes the [2+2+1] cross-cyclotrimerization of silylacetylenes and two alkynyl esters, leading to substituted silylfulvenes (see scheme; cod=1,5-cyclooctadiene). The reductive complexation of the silylfulvene product with RhCl3 in EtOH furnished the corresponding dinuclear electron-deficient cyclopentadienyl rhodium(III) complex.