Cyclopropanation and Carbonyl Olefination of Alkynylsilyldithianes via Titanium Alkynyl-carbenes
T. Takeda*, M. Ozaki, S. Kuroi, A. Tsubochi
Tokyo University of Agriculture and Technology, Japan
21. September 2005 (online)
Starting from readily available alkynylsilyldithianes, polysubstituted alkynylcyclopropanes and enynes can be obtained in a one-step reaction, usually in good yields. The reaction also illustrates an interesting example of a silicon-directed allylic rearrangement.