Dedicated to the memory of Prof. Kilian Muñiz, a pioneer in alkene functionalization
chemistry.
Abstract
Enantioselective diamination of alkenes represents one of the most straightforward
methods to access enantioenriched, vicinal diamines, which are not only frequently
encountered in biologically active compounds, but also have broad applications in
asymmetric synthesis. Although the analogous dihydroxylation of olefins is well-established,
the development of enantioselective olefin diamination lags far behind. Nevertheless,
several successful methods have been developed that operate by different reaction
mechanisms, including a cycloaddition pathway, a two-electron redox pathway, and a
radical pathway. This short review summarizes recent advances and identifies limitations,
with the aim of inspiring further developments in this area.
1 Introduction
2 Cycloaddition Pathway
3 Two-Electron Redox Pathway
3.1 Pd(0)/Pd(II) Diamination
3.2 Pd(II)/Pd(IV) Diamination
3.3 I(I)/I(III) Diamination
3.4 Se(II)/Se(IV) Diamination
4 One-Electron Radical Pathway
4.1 Cu-Catalyzed Diamination
4.2 Fe-Catalyzed Diamination
5 Summary and Outlook
Key words
vicinal diamines - asymmetric catalysis - redox catalysis - olefin diamination - transition
metal - radical