α-Substituted vinyl azides: an emerging functionalized alkene.

Area of Science:

• Organic Chemistry
• Synthetic Chemistry
• Heterocyclic Chemistry

Background:

• Vinyl azides are valuable building blocks in organic synthesis.
• α-Substituted vinyl azides exhibit unique reactivity beyond typical azide behavior.
• These compounds serve as precursors to diverse nitrogen-containing molecules.

Purpose of the Study:

• To review synthetic methods for accessing vinyl azides.
• To comprehensively cover the multifaceted reactivity of vinyl azides.
• To highlight their potential in synthetic applications.

Main Methods:

• Exploitation of vinyl azides in cycloadditions.
• Application in C-H functionalization reactions.
• Utilizing intermediates like iminodiazonium ions and nitrilium ions.

Main Results:

• Demonstration of vinyl azides as radical acceptors, nucleophiles, and electrophiles.
• Generation of various reactive intermediates (iminyl radicals, metal enaminyl radicals).
• Successful application under transition metal/photoredox catalysis.

Conclusions:

• Vinyl azides are versatile synthons for N-heterocycles and other functional groups.
• Their unique reactivity enables access to a wide array of nitrogen-containing compounds.
• This review underscores their broad potential in synthetic chemistry.