Recent Advances in Iron-Catalyzed Csp2-Csp2 Cross-Couplings

The present review article highlights recent progress in the field of iron-catalyzed cross-coupling reactions between Csp(2) centers. The reaction scope of various iron-catalyzed couplings between aromatic Grignard reagents and unsaturated halides is described and some mechanistic insights are given. 1 Introduction 2 Historical Work 3 Iron-Catalyzed Homocouplings of Aryl Organometallics 4 Iron-Catalyzed sp(2)-sp(2) Cross-Couplings 4.1 Arylcopper Reagents as Nucleophiles 4.2 Arylmagnesium Reagents as Nucleophiles 4.2.1 Couplings with Alkenyl Halides 4.2.2 Couplings with Heteroaryl Halides 4.2.3 Coupling with Aryl Halides 5 Conclusion