An Improved Catalyst System for the Iron
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Gerhard Hilt; Patrick Bolze; Klaus Harms
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Article
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2007
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John Wiley and Sons
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English
β 359 KB
## Abstract A considerable improvement is reported in the ironβcatalyzed ringβexpansion reactions of epoxides generating tetrahydrofuran derivatives by formal insertion of an alkene. Optimization of the catalyst system revealed that a preformed [Fe(salen)] complex minimizes the formation of polymer