Practical demethylation of aryl methyl ethers using an odorless thiol reagent
1Department of Chemistry and Institute of Basic Sciences, Sungshin Women's University, 249-1, Dongseon-dong 3-ga, Seongbuk-gu, Seoul 136-742, Korea. jchae@sungshin.ac.kr
A new method efficiently removes methyl groups from aryl methyl ethers using a long-chain thiol. This practical approach yields phenolic compounds quickly and cleanly, avoiding unpleasant odors and hazardous gases.
Area of Science:
- Organic Chemistry
- Synthetic Chemistry
Background:
- Aryl methyl ethers are common structural motifs.
- Efficient demethylation is crucial for synthesizing phenolic compounds.
Purpose of the Study:
- To develop a practical and safe method for aryl methyl ether demethylation.
- To achieve clean and fast conversions to phenolic compounds.
Main Methods:
- Utilized a long-chain thiol for demethylation.
- Employed in-situ generation of sodium alkylthiolate using NaOH.
- Applied the method to a broad range of aryl methyl ether substrates.
Main Results:
- Achieved clean and fast demethylation of aryl methyl ethers.
- Demonstrated broad substrate scope.
- Minimized foul smells and potentially harmful gas generation compared to other thiolate methods.
Conclusions:
- Developed a highly practical and attractive method for aryl methyl ether demethylation.
- The protocol offers a safer and more convenient alternative for synthesizing phenolic compounds.
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