Conversion of dialdehydes into cyclic α-ketols by thiazolium salts: synthesis of cyclic 2-hydroxy-2-enones
Abstract
Pentanedials and hexanedials are cyclised by thiazolium salts and triethylamine in acetonitrile into 2-hydroxy-cyclopentanones and -cyclohexanones, easily oxidised to the 2-hydroxy-2-enones.
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