One-Pot, Multistep Reactions for the Modular Synthesis of N, N'-Diarylindazol-3-ones.

Area of Science:

• Organic Chemistry
• Synthetic Chemistry
• Medicinal Chemistry

Background:

• Indazol-3-one derivatives are important scaffolds in medicinal chemistry.
• Existing synthetic routes can be complex and low-yielding.

Purpose of the Study:

• To develop a more efficient and modular synthesis of N, N'-diarylindazol-3-ones.
• To utilize readily available starting materials for improved accessibility.

Main Methods:

• Copper-catalyzed oxidative C-N cross-coupling reaction.
• Dehydrogenative N-N bond formation under an air atmosphere.
• Integration with a preceding decarboxylative amination.

Main Results:

• Successful synthesis of N, N'-diarylindazol-3-ones achieved.
• Good to excellent yields reported for the target compounds.
• The process demonstrated modularity and straightforwardness.

Conclusions:

• A pot-economic and efficient synthetic strategy for N, N'-diarylindazol-3-ones has been established.
• The developed method offers a practical approach for accessing diverse indazol-3-one derivatives.