Fluorinated Amine Stereotriads via Allene Amination

Area of Science:

• Organic Chemistry
• Medicinal Chemistry
• Fluorine Chemistry

Background:

• Fluorine incorporation into organic molecules can enhance bioactivity.
• Specific stereotriads like C-F/C-N/C-O are crucial in pharmaceuticals, including antivirals and androgen receptor modulators.
• Synthesizing these motifs is synthetically challenging.

Purpose of the Study:

• To develop an efficient method for synthesizing C-F/C-N/C-O stereotriads.
• To explore the scope and selectivity of the new synthetic strategy.
• To demonstrate the utility of the synthesized triads in creating valuable fluorinated compounds.

Main Methods:

• Oxidative allene amination using Selectfluor.
• Stereoselective synthesis of triply functionalized triads.
• Transformation of triads into fluorinated pyrrolidines and amino acids.

Main Results:

• Rapid delivery of C-F/C-N/C-O stereotriads with good scope.
• High diastereoselectivity achieved, exclusively forming syn products.
• Successful conversion of triads into diverse fluorinated pyrrolidines and protected amino acids (α, β, and γ).

Conclusions:

• The developed oxidative allene amination is a powerful tool for accessing complex fluorinated motifs.
• This method provides a versatile route to valuable fluorinated building blocks for drug discovery.
• The strategy offers a significant advancement in the synthesis of pharmaceutically relevant fluorinated compounds.