Journal
TETRAHEDRON
Volume 64, Issue 44, Pages 10188-10194Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2008.08.041
Keywords
Metallacycles; Cyclomagnesiation; Allenes; Homogeneous catalysis; Titanium; Dzhemilev reaction
Categories
Funding
- Russian Foundation [08-03-00789]
- Russian Science Support Foundation [08-03-00789, MC-1039.2007.3, Sci.Sh.-2349.2008.3]
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High-yield (> 80%) catalytic intermolecular cyclomagnesiation of cyclic and acyclic allenes with the aid of Grignard reagents has been realized in the presence of Cp2TiCl2. The synthesized unsaturated bi- and tricyclic organomagnesium compounds (OMC) have been successfully converted in situ into thiophenes, unsaturated ketones, cyclic and acyclic hydrocarbons with high regio- and stereoselectivity. (c) 2008 Elsevier Ltd. All rights reserved.
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