[GRAPHICS]The first examples of ring-closing metathesis reactions of olefin-containing enamides using ruthenium-based catalysts have been demonstrated, A preliminary investigation into the scope and limitations, leading to protected five- and six-membered cyclic enamides, will be presented.
作者:John B. Feltenberger、Ryuji Hayashi、Yu Tang、Eric S. C. Babiash、Richard P. Hsung
DOI:10.1021/ol901434g
日期:2009.8.20
Benzyne-[2 + 2] cycloadditions with enamides are described. This effort led to the development of a highly stereoselectivetandem [2 + 2] cycloaddition−pericyclic ring-opening−intramolecular-N-tethered-[4 + 2] cycloaddition for rapid assembly of nitrogen heterocycles.
作者:Sape S. Kinderman、Jan H. van Maarseveen、Hans E. Schoemaker、Henk Hiemstra、Floris P. J. T. Rutjes
DOI:10.1021/ol016013e
日期:2001.6.1
[GRAPHICS]The first examples of ring-closing metathesis reactions of olefin-containing enamides using ruthenium-based catalysts have been demonstrated, A preliminary investigation into the scope and limitations, leading to protected five- and six-membered cyclic enamides, will be presented.