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Start Over Author "Kyne, Sara H." Journal organometallics
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3. Elucidating Dramatic Ligand Effects on SET Processes: Iron Hydride versus Iron Borohydride Catalyzed Reductive Radical Cyclization of Unsaturated Organic Halides.

Author

Kyne, Sara H., Clémancey, Martin, Blondin, Geneviève, Derat, Etienne, Fensterbank, Louis, Jutand, Anny, Lefèvre, Guillaume, and Ollivier, Cyril

Subjects
*IRON hydrides, *LIGANDS (Chemistry), *RING formation (Chemistry), *IRON catalysts, *ACETONITRILE
Abstract

An iron(II) borohydride complex ([(η¹-H3BH)FeCl(NCCH3)4]) is employed as the precatalyst in iron-catalyzed radical cyclizations of unsaturated organic halides in the presence of NaBH4. Mechanistic investigations have established that the ligand bound to the metal center (acetonitrile versus ethylenebis(diphenylphosphine) (dppe)) plays a crucial role in the structure and reactivity of the active anionic iron(I) hydride ([HFeCl(dppe)2]-) and borohydride ([(η¹-H3BH)FeCl(NCCH3)4]-) with unsaturated haloacetals. This work provides new insights into iron(I) hydride and borohydride species and their potential implication in single-electron processes. [ABSTRACT FROM AUTHOR]

Published
2018
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