Abstract
2-(Z,E-Chloromethylidene)-3-hydroxy-1-phenyl-5-organylpent-4-yn-1-ones were prepared by tandem α-hydroxyethynylation/β-chlorination of 1-phenylprop-2-yn-1-one mediated by TiCl4 and Me2S in the chalcogen Baylis–Hillman reaction.
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