Enabling Deoxygenative C(sp2)-C(sp3) Cross-Coupling for Parallel Medicinal Chemistry.
Wei Liu1, James Mulhearn1, Bo Hao1
1Discovery Chemistry, Janssen Research & Development LLC, 1400 McKean Road, Spring House, Pennsylvania 19477, United States.
An automated deoxygenative coupling method was developed for aryl bromides and alcohols, enabling parallel medicinal chemistry. This high-throughput protocol enhances drug discovery by utilizing diverse alcohol building blocks.
Area of Science:
- Organic Chemistry
- Medicinal Chemistry
- Chemical Engineering
Background:
- Alcohols are versatile building blocks but underutilized in C(sp2)-C(sp3) coupling reactions.
- Existing metallaphotoredox deoxygenative coupling methods face limitations in scalability for library synthesis.
Purpose of the Study:
- To develop an automated, high-throughput workflow for deoxygenative C(sp2)-C(sp3) coupling of aryl bromides with alcohols.
- To enable parallel synthesis for medicinal chemistry applications.
Main Methods:
- Implementation of an automated workflow using solid-dosing and liquid-handling robots.
- Demonstration of protocol robustness and consistency across multiple automation platforms.
- Cheminformatic analysis to guide the examination of diverse alcohol substrates.
Main Results:
- Successful development of a high-throughput, automated deoxygenative coupling protocol.
- Demonstrated robustness and consistency of the automated workflow.
- Established a broad scope of alcohol substrates applicable to medicinal chemistry.
Conclusions:
- The automated protocol significantly enhances the utility of alcohols in C(sp2)-C(sp3) cross-coupling.
- This method has the potential to accelerate drug discovery by enabling parallel synthesis.
- Increased access to diverse chemical space through alcohol coupling is a key advancement.
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