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Solid-phase Synthesis of [4.4] Spirocyclic Oximes
Published on: February 6, 2019
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Synthesis of Complex Phenols Enabled by a Rationally Designed Hydroxide Surrogate
Patrick S Fier1, Kevin M Maloney1
1Department of Process Research and Development, Merck & Co., Inc., Rahway, NJ, USA.
Angewandte Chemie (International Ed. in English)
|March 25, 2017
Summary
Synthesizing phenols from aryl halides is difficult. This study introduces a new palladium-catalyzed method using benzaldehyde oxime for mild, late-stage hydroxylation of drug-like molecules.
Area of Science:
- Organic Chemistry
- Catalysis
- Synthetic Methodology
Background:
- Converting aryl halides to phenols is a significant challenge in organic synthesis.
- Existing methods often require harsh conditions, limiting their applicability.
Purpose of the Study:
- To develop a mild and broadly applicable method for phenol synthesis from aryl halides.
- To enable late-stage hydroxylation of complex molecules.
Main Methods:
- Palladium-catalyzed cross-coupling reaction.
- Utilized benzaldehyde oxime as a novel hydroxide surrogate.
- Employed mildly basic reaction conditions.
Main Results:
- Successfully synthesized phenols from various aryl halides.
- Demonstrated the method's applicability in late-stage functionalization.
- Achieved mild reaction conditions suitable for sensitive substrates.
Conclusions:
- Developed an efficient and versatile Pd-catalyzed method for phenol synthesis.
- The use of benzaldehyde oxime offers a practical alternative for hydroxylation.
- The methodology facilitates the synthesis of complex phenolic compounds.
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