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Reactions of 3,5-Diaryl-1,2-dithiolium Salts and 3,5-Diaryl-1,2,4-dithiazolium Salts with Metal Cyclopentadienides

โœ Scribed by Hartke, Klaus ;Kraska, Andreas ;Massa, Werner ;Molinier, Michel ;Wocadlo, Sigrid

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
913 KB
Volume
1997
Category
Article
ISSN
0947-3440

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โœฆ Synopsis

Abstract

Reaction of the 3,5โ€diarylโ€1,2โ€dithiolium salts 2 with the metal cyclopentadienides 4 and 9 leads to the formation of the tricyclic compounds 6 and 10 via a ringโ€opened intermediate, which undergoes an intramolecular Dielsโ€Alder cyclization. Compounds 6 and 10 rearrange by treatment with boron trifluorideโ€diethyl ether to the isomeric compounds 7 and 11. The structures 6f and 7f were confirmed by Xโ€ray analysis. Condensation of the 3,5โ€diarylโ€1,2,4โ€dithiazolium salts 3 with the metal cyclopentadienides 4 affords the tricyclic compounds 12, which do not rearrange by Lewis acid catalysis.

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