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ChemInform Abstract: Catalytic Transformations of Vinylthiiranes by Tungsten Carbonyl Complexes. A New Route to 3,6-Dihydro-1,2-dithiins.

✍ Scribed by Richard D. Adams; Joseph L. Perrin

Publisher: John Wiley and Sons
Year: 2010
Weight: 32 KB
Volume: 30
Category: Article
ISSN: 0931-7597
DOI: 10.1002/chin.199934180

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✦ Synopsis

Catalytic Transformations of Vinylthiiranes by Tungsten Carbonyl Complexes. A New Route to 3,6-Dihydro-1,2-dithiins.

-Two equivalents of vinylthiiranes (I) are transformed in the presence of W(CO) 5 (MeCN) catalyst to dithiins (II) and butadiene in good yields. Complexes W(CO) 4 (PPhR 2 )(MeCN) (R = Me, Ph), containing phosphine ligands, show a significantly higher catalytic activity as the pentacarbonyl tungsten complex. A dithiintungstenpentacarbonyl complex is isolated and characterized as a species of the catalytic cycle. -(

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