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[(DPEPhos)(bcp)Cu]PF6: A General and Broadly Applicable Copper-Based Photoredox Catalyst
Published on: May 21, 2019
A general and efficient copper catalyst for the double carbonylation reaction
Jianming Liu1, Rongzhao Zhang, Shoufeng Wang
1State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, PR China.
Organic Letters
|February 18, 2009
Summary
A novel copper catalyst system enables double carbonylation of aryl iodides and amines, avoiding expensive palladium and phosphine ligands. This nonprecious metal approach offers broader applicability for organic synthesis.
Area of Science:
- Organic Chemistry
- Catalysis
- Organometallic Chemistry
Background:
- Palladium catalysts and phosphine ligands are traditionally used for double carbonylation reactions.
- These traditional methods present challenges related to cost and ligand sensitivity.
Purpose of the Study:
- To develop a more economical and versatile catalytic system for the double carbonylation of aryl iodides and secondary amines.
- To replace precious metal catalysts with earth-abundant alternatives.
Main Methods:
- Utilized a copper(I) iodide (CuI) complex with a N-heterocyclic carbene (NHC) precursor as the catalytic system.
- Investigated the double carbonylation of various aryl iodides and secondary amines under optimized conditions.
Main Results:
- Successfully demonstrated the double carbonylation of aryl iodides and secondary amines using the (NHC)CuI catalyst.
- The developed protocol avoids the need for expensive palladium and phosphine ligands.
- The new catalytic system exhibits greater generality compared to previously reported methods.
Conclusions:
- The (NHC)CuI complex provides an efficient and cost-effective alternative for double carbonylation reactions.
- This advancement offers a more sustainable and broadly applicable method in organic synthesis.
- The protocol highlights the potential of nonprecious metal catalysis in complex organic transformations.
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