Transition Metal-Diene Complexes in Organic Synthesis; Part 11.1 Tricarbonyl(η4-1-aza-1,3-butadiene) iron Complexes as Iron Tricarbonyl Transfer Reagents: 1-Aza-1,3-butadiene-Catalyzed Transfer of the Iron Tricarbonyl Fragment and Complexation of 1,3-Dienes by Polymer-Supported Iron Tricarbonyl

Hans-Joachim Knölker; Peter Gonser

doi:10.1055/s-1992-21400

Synlett 1992; 1992(6): 517-520
DOI: 10.1055/s-1992-21400

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Transition Metal-Diene Complexes in Organic Synthesis; Part 11.¹ Tricarbonyl(η⁴-1-aza-1,3-butadiene) iron Complexes as Iron Tricarbonyl Transfer Reagents: 1-Aza-1,3-butadiene-Catalyzed Transfer of the Iron Tricarbonyl Fragment and Complexation of 1,3-Dienes by Polymer-Supported Iron Tricarbonyl

Hans-Joachim Knölker^* , Peter Gonser

^*Institut für Organische Chemie, Universität Karlsruhe, Richard-Willstätter-Allee, D-7500 Karlsruhe 1, Germany

Abstract

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Tricarbonyliron complexes of 1-aza-1,3-butadienes are excellent transfer reagents for the complexation of 1,3-dienes. Moreover, 1-aza-1,3-butadienes catalyze the transfer of the tricarbonyliron group, e.g. in the complexation of 1,3-cyclohexadiene with nonacarbonyldiiron (yield: 98%, based on Fe). For the first time this method enables the transfer of both iron tricarbonyl fragments of nonacarbonyldiiron to the diene. Fixation of the 1-aza-1,3-diene on a solid support provides a heterogeneous catalyst for the complexation of 1,3-dienes which can be recycled.

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