1. A Mechanistic Dichotomy Leading to a Ruthenium-Catalyzedcis-Addition for Stereoselective Formation of (Z)-Vinyl Bromides
2. A Ruthenium-Catalyzed Three-Component Coupling to Form E-Vinyl Chlorides
3. For other cis-halometalations, see: Dietl, H.; Reinheimer, H.; Moffatt, J.; Maitlis, P. M. J. Am. Chem. Soc. 1970, 92, 2276. Kaneda, K.; Uchiyama, T.; Fujiwara, Y.; Imanaka, T.; Teranishi, S. J. Org. Chem. 1979, 44, 55. Hua, R.; Shimada, S.; Tanaka, M. J. Am. Chem. Soc. 1998, 120, 12365. For a stoichiometric cis-chlororuthenation of acetylenedicarboxylates, see: Holland, P. R.; Howard, B.; Mawby, R. J. J. Chem. Soc., Dalton Trans. 1983, 231.
4. A New Strategy for Cyclopentenone Synthesis
5. All new compounds have been fully characterized and elemental composition established by high resolution mass spectrometry and/or combustion analysis.