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Concise synthesis of (S)-N-BOC-2-hydroxymethylmorpholine and (S)-N-BOC-morpholine-2-carboxylic acid
1Pfizer Global Research and Development, Groton Laboratories, Eastern Point Road, Groton Connecticut 06340, USA. kevin.e.henegar@pfizer.com
The Journal of Organic Chemistry
|March 28, 2008
Summary
A new, simple synthesis method for N-BOC-2-hydroxymethylmorpholine and N-BOC-morpholine-2-carboxylic acid was developed. This process avoids chromatography, enabling high-throughput production of these valuable morpholine derivatives.
Area of Science:
- Organic Chemistry
- Synthetic Chemistry
- Process Chemistry
Background:
- Morpholine derivatives are important building blocks in medicinal chemistry.
- Efficient synthesis of functionalized morpholines is crucial for drug discovery.
- Existing synthetic routes may involve multiple steps or purification challenges.
Purpose of the Study:
- To develop an operationally simple and scalable synthesis of N-BOC-2-hydroxymethylmorpholine and N-BOC-morpholine-2-carboxylic acid.
- To establish a synthetic route that minimizes purification steps, such as chromatography.
- To provide a high-throughput method for producing key morpholine intermediates.
Main Methods:
- Utilizing epichlorohydrin as a starting material.
- Employing a streamlined synthetic sequence.
- Implementing purification strategies that avoid column chromatography.
Main Results:
- Successful synthesis of N-BOC-2-hydroxymethylmorpholine (1).
- Successful synthesis of N-BOC-morpholine-2-carboxylic acid (2).
- Demonstrated a chromatography-free process, enhancing operational simplicity.
Conclusions:
- The developed method offers an efficient and practical route to important N-BOC protected morpholine derivatives.
- The avoidance of chromatography significantly improves process throughput and scalability.
- This synthesis provides a valuable tool for accessing morpholine-based compounds in pharmaceutical research and development.
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