Au<sup>I</sup>-catalyzed cycloisomerization of 1,5-enynes bearing a propargylic acetate: formation of unexpected bicyclo[3.1.0]hexene
作者:Nicolas Marion、Pierre de Frémont、Gilles Lemière、Edwin D. Stevens、Louis Fensterbank、Max Malacria、Steven P. Nolan
DOI:10.1039/b602839j
日期:——
The use of N-heterocyclic carbene (NHC) as a ligand in the gold(I)-catalyzed cycloisomerization of enyne results in the assembly of a new carbocyclic product.
The Effect of a Hydroxy Protecting Group on the PtCl2-Catalyzed Cyclization of Dienynes—A Novel, Efficient, and Selective Synthesis of Carbocycles Acknowledgement is made to the EU for the COST D12 Action “Cascade Free Radical Reactions” and for a short-term scientific mission to Madrid (EM). We thank Nieves Arroyo (CSIC) for preliminary experiments, Dr. J. Vaissermann (UPMC) for the X-ray analysis of 3 e, Dr. M. L. Jimeno (CNQO) for NMR studies on 3 a, Dr. M.-N. Rager (ENSCP) for NMR studies on 3 h, 6, and 11, and Matthieu Bernard (UPMC) for performing some of the experiments. We also thank Dr. Emmanuel Lacôte and Dr. Henri Rudler (UPMC) for helpful discussions.