Tandem Catalysis: Generating Multiple Contiguous Carbon−Carbon Bonds through a Ruthenium-Catalyzed Ring-Closing Metathesis/Kharasch Addition
作者:Benjamin A. Seigal、Cristina Fajardo、Marc L. Snapper
DOI:10.1021/ja055806j
日期:2005.11.23
0], and [5.3.0] ring systems in one step from the appropriately functionalized acyclic precursors. For substrates where the intramolecular Kharasch addition fails, an intermolecularKharasch addition is possible. By combining the intra- and intermolecularKharasch additions with RCM, three new contiguous carbon-carbon bonds with multiple stereocenters can be generated by the ruthenium catalyst in a controlled