ORGN 631 |
Intramolecular hydrosilylation of allenes by rhodium catalyst: Synthesis of substituted vinylsilanes
| Greta Varchi and Iwao Ojima. Department of Chemistry, State University of New York at Stony Brook, Stony Brook, NY 11794-3400 |
| Intramolecular hydrosilylation of alkenes and alkynes has been extensively studied. However, to the best of our knowledge, no report has been published on the reaction of allenes. Thus, we investigated the reactions of dimethylsiloxyalkyl allenes 1 catalyzed by Rh(acac)(CO)2 under CO atmosphere. The reaction gave the corresponding exo-dig cyclization product 2 as predominant product accompanied by a small amount of exo-trig cyclization product 3. Deuterium labeling study provided a proof for the proposed mechanism. The scope and limitation of this new process will be discussed. 
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New Reactions, Methodology, Heterocycles, Aromatics
8:00 PM-10:00 PM, Wednesday, August 25, 2004 Pennsylvania Convention Center -- Hall D, Poster
Sci-Mix
8:00 PM-10:00 PM, Monday, August 23, 2004 Pennsylvania Convention Center -- Hall D, Sci-Mix
Division of Organic Chemistry
The 228th ACS National Meeting, in Philadelphia, PA, August 22-26, 2004
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