Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 21, Issue 46, Pages 16344-+Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201503270
Keywords
cyclobutadienes; diene ligands; homogeneous catalysis; rhodium; sandwich complexes
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Funding
- Council of the President of the Russian Federation [MK-4261.2014.3]
- Russian Scientific Foundation [14-13-00884]
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Cyclobutadiene rhodium complexes bear high potential for applications in organometallic synthesis and catalysis. We have found that the cyclobutadiene complexes with substitutionally labile p-xylene ligands [(C4R4)Rh(p-xylene)](+) can be synthesized in one step from the commercially available bis(ethylene) complex [{(C2H4)(2)RhCl}(2)], p-xylene, and internal alkynes. The replacement of p-xylene by various ligands provides a general access to other [(C4R4)Rh] compounds, such as [(C4R4)RhCl](x), [(C4R4)RhL3](+), [(C4R4)Rh(C5H5)], and [(C4R4)Rh(arene)](+). Complex [(C4Et4)Rh(p-xylene)](+) also catalyzes an unusual cycloisomerization of a 1,11-dien-6-yne into a bicyclic diene.
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