Dinitro-5,5-Dimethylhydantoin: An Arene Nitration Reagent
Fuqiang Jia1, Ao Li1, Xiangdong Hu1
1Department of Chemistry & Material Science, Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education of China, Northwest University, Xi'an 710127, China.
Organic Letters
|June 15, 2023
Summary
Researchers developed dinitro-5,5-dimethylhydantoin (DNDMH) for arene nitration. This reagent shows functional group tolerance, with only one nitro group being reactive for efficient nitroarene synthesis.
Area of Science:
- Organic Chemistry
- Synthetic Chemistry
Background:
- Arene nitration is a fundamental transformation in organic synthesis.
- Developing efficient and selective nitration reagents is crucial for accessing valuable nitroarene compounds.
Purpose of the Study:
- To introduce and evaluate a novel N-nitro compound, dinitro-5,5-dimethylhydantoin (DNDMH), as an arene nitration reagent.
- To investigate the reactivity and selectivity of DNDMH in arene nitration reactions.
Main Methods:
- Synthesis of dinitro-5,5-dimethylhydantoin (DNDMH).
- Reaction of DNDMH with various arenes under different conditions.
- Analysis of reaction products using spectroscopic methods.
Main Results:
- DNDMH effectively nitrated diverse arenes, demonstrating good functional group tolerance.
- Only the N-nitro group at the N1 position of DNDMH was found to be reactive in the nitration process.
- Arene nitration was not observed with N-nitro compounds having the nitro group solely at the N2 position.
Conclusions:
- Dinitro-5,5-dimethylhydantoin (DNDMH) is a viable and selective reagent for arene nitration.
- The regioselectivity of nitration is dictated by the position of the N-nitro group within the hydantoin structure.
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