This research was supported by the MEC, Spain (CTQ2004-08077 and CTQ2007-61048; fellowships to D.S. and A.G.) and the Principado de Asturias (GE-EXP01-11). We are grateful to Dr. A. Soldevilla (Universidad de La Rioja) for his assistance in the X-ray crystallographic analysis.
Metal Carbene Dimerization: Versatile Approach to Polyalkynylethenes†
Article first published online: 9 JUL 2008
Copyright © 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Angewandte Chemie International Edition
Volume 47, Issue 33, pages 6225–6228, August 4, 2008
How to Cite
Barluenga, J., de Sáa, D., Gómez, A., Ballesteros, A., Santamaría, J., de Prado, A., Tomás, M. and Suárez-Sobrino, Angel L. (2008), Metal Carbene Dimerization: Versatile Approach to Polyalkynylethenes. Angew. Chem. Int. Ed., 47: 6225–6228. doi: 10.1002/anie.200801584
- Issue published online: 29 JUL 2008
- Article first published online: 9 JUL 2008
- Manuscript Revised: 27 MAY 2008
- Manuscript Received: 4 APR 2008
- MEC, Spain. Grant Numbers: CTQ2004-08077, CTQ2007-61048
- Principado de Asturias. Grant Number: GE-EXP01-11
- materials science
Heads or tails? Chemo-, regio-, and stereoselective access to cross- and linear conjugated poly-ynene scaffolds from alkynyl-derived group six metal carbenes is reported. The metal carbenes shown (M=Cr, W; TIPS=triisopropylsilyl) readily undergo low-temperature, tail-to-tail dimerization in the presence of potassium tert-butoxide by reaction at either of the Cβ atoms to provide E-polyalkynylethenes.