Abstract
Carbenes are versatile, highly reactive intermediates with great importance in chemistry.
We recently reported on our findings on safe and scalable applications of hazardous
diazoacetonitrile using cheap and commercially available iron catalysts in efficient
carbene transfer reactions, ranging from cyclopropanation towards C–H functionalization
reactions for the synthesis of biologically important building blocks. More lately,
we uncovered the reactivity of diazoalkanes under photochemical conditions using visible
light and were able to demonstrate a variety of different, metal-free carbene transfer
reactions, which now open up new sustainable ways for the construction of small functional
molecules.
1 Introduction
2 Iron-Catalyzed Carbene Transfer Reactions of Diazoacetonitrile
3 Metal-free Carbene Transfer Reaction with Visible Light
4 Summary
Key words
carbene transfer reactions - cycloaddition - rearrangement - C–H functionalization
- diazoalkanes - iron - photochemistry