Stereogenic P(V) platform construction via streamlined installation

Area of Science:

• Organic Chemistry
• Asymmetric Synthesis
• Medicinal Chemistry

Background:

• Fully heteroatom-substituted phosphorus(V) stereocenters are crucial in pharmaceuticals, agrochemicals, and catalysis.
• Existing methods for creating these stereocenters often involve complex, multi-step syntheses, chiral auxiliaries, or resolution techniques, limiting efficiency and accessibility.
• There is a need for more direct and robust catalytic asymmetric methods for synthesizing these valuable phosphorus(V) compounds.

Purpose of the Study:

• To develop a streamlined and efficient strategy for installing fully heteroatom-substituted phosphorus(V) stereocenters.
• To demonstrate the broad applicability of the new method using diverse nucleophiles and generating various stereocenters.
• To showcase the utility of the protocol in synthesizing bioactive molecules and evaluating their potential applications, such as in agriculture.

Main Methods:

• A novel, streamlined installation strategy starting from phosphorus oxychloride (POCl₃).
• Utilized thirteen distinct N-, O-, and S-based nucleophiles to react with POCl₃.
• Prepared six different types of phosphorus(V) stereocenters, with over 100 examples demonstrating the method's scope and reliability.

Main Results:

• Successfully synthesized a wide array of fully heteroatom-substituted phosphorus(V) stereocenters using a simple and direct protocol.
• The method proved general and reliable, evidenced by the preparation of over 100 distinct compounds.
• Applied the protocol to the concise synthesis of twelve bioactive molecules and analogs, identifying two new potential fungicide candidates.

Conclusions:

• The developed protocol offers an efficient and streamlined approach to access diverse phosphorus(V) stereocenters from readily available starting materials.
• The synthetic method is versatile and reliable, facilitating the preparation of complex molecules for various applications.
• Antifungal evaluations highlighted the significance of stereochemistry and identified promising new fungicide candidates, underscoring the practical utility of the research.