Efficient condensation between glyoxal hydrates and sulfonium salts leading to highly functionalized 1,4-diketones.

[摘要]：a-Alkylthio-substituted a,b-unsatd. 1,4-dicarbonyl compds. with three different functionalities are easily available through condensation of sulfonium salts and various arom. or aliph. glyoxal hydrates catalyzed by Na2SeO3 or a combination of SeO2 and Na2CO3.

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