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Base Metal Catalysis in Nitrene Transfer Reactions
Hillol Khatua1, Anogh Ghosh1, Subrata Das1
1Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune, 411008 Maharashtra, India.
Base metal catalysis enables sustainable synthesis of amine building blocks via nitrene transfer reactions (NTRs). This review details 3d metal catalysts (Mn, Fe, Co, Ni, Cu) for X-N bond formation, exploring reactivity and selectivity.
Area of Science:
- Organic Chemistry
- Catalysis
- Sustainable Synthesis
Background:
- Nitrene transfer reactions (NTRs) are crucial for forming X-N bonds (X = C, N, P, S).
- 3d metal catalysis has gained prominence in organic synthesis over four decades.
- Base metal catalysts offer a sustainable alternative to precious metals.
Purpose of the Study:
- To review the use of base metal complexes (Mn, Fe, Co, Ni, Cu) in NTRs.
- To discuss the control of reaction pathways for X-N bond formation.
- To elucidate mechanistic rationale and catalyst performance.
Main Methods:
- Comprehensive review of literature on base metal-catalyzed NTRs.
- Analysis of various nitrene precursors and their transformations.
- Discussion of mechanistic studies for 3d metal systems.
Main Results:
- Detailed examination of exemplary and pioneering syntheses using base metal catalysts.
- Elucidation of reactivity, regioselectivity, chemoselectivity, and enantioselectivity.
- Identification of limitations and opportunities in base metal-catalyzed NTRs.
Conclusions:
- Base metal catalysis provides a sustainable and robust approach to amine building blocks via NTRs.
- Understanding mechanistic pathways is key to optimizing catalyst performance.
- Further research can expand the scope and efficiency of these transformations.
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