FON: An Innovative Fluorinated Group via Hydroetherification-Type Reactivity

Area of Science:

• Organic Chemistry
• Fluorine Chemistry
• Medicinal Chemistry

Background:

• The development of novel fluorinated functional groups is crucial for drug discovery.
• O-difluoroalkylhydroxylamines (FON) represent a unique structural motif with potential medicinal applications.
• Existing synthetic routes for such compounds are often limited in scope or efficiency.

Purpose of the Study:

• To report an efficient, one-step synthesis of the novel O-difluoroalkylhydroxylamine (FON) functional group.
• To explore the scope and limitations of the developed synthetic methodology.
• To provide mechanistic insights into the reaction and its potential applications in catalysis.

Main Methods:

• Metal-free hydroetherification-type addition reactions.
• Chemo- and regioselective synthesis.
• Diverse substrate scope evaluation.
• Gram-scale synthesis and site-selective deuterium incorporation.

Main Results:

• A novel, efficient one-step synthesis for the FON group was achieved.
• The reaction demonstrated broad substrate scope and high chemo- and regioselectivity.
• The method was successfully applied to gram-scale synthesis and site-selective deuterium labeling.
• Mechanistic studies provided insights into Brønsted acid catalysis.

Conclusions:

• The reported strategy offers a facile and versatile route to O-difluoroalkylhydroxylamines (FON).
• This method facilitates the incorporation of FON into diverse molecular architectures.
• The mechanistic understanding may enable further advancements in fluorination chemistry and catalysis.