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Facile and efficient sulfenylation method using quinone mono-O,S-acetals under mild conditions
M Matsugi1, K Murata, K Gotanda
1Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka 565-0871, Japan.
The Journal of Organic Chemistry
|April 3, 2001
Summary
A new sulfenylation method uses aromatization of quinone mono-O,S-acetals. This technique efficiently sulfenylates silyl enol ethers and electron-rich aromatics under mild conditions, offering broad substrate applicability.
Area of Science:
- Organic Chemistry
- Synthetic Chemistry
Background:
- Sulfenylation is a crucial transformation in organic synthesis.
- Existing methods may require harsh conditions or lack substrate scope.
Purpose of the Study:
- To develop a novel and mild sulfenylation method.
- To explore the utility of quinone mono-O,S-acetals as sulfenylation reagents.
Main Methods:
- Aromatization of quinone mono-O,S-acetals to generate sulfenylation reagents.
- Reaction of generated reagents with silyl enol ethers and electron-rich aromatic compounds.
Main Results:
- The novel method successfully achieved sulfenylation under mild conditions.
- A specific reagent, O,S-acetal 2j with a pentafluorophenylthio group, demonstrated superior effectiveness.
- Broad substrate adaptability was observed for the developed sulfenylation process.
Conclusions:
- Quinone mono-O,S-acetals provide an effective platform for novel sulfenylation reactions.
- The developed method offers a mild and versatile approach for introducing sulfur functionalities.
- O,S-acetal 2j represents a highly adaptable reagent for diverse sulfenylation applications.