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ChemInform Abstract: A Novel Ruthenium-Catalyzed Tandem Diyne Cycloisomerization—Cross Metathesis Process.

✍ Scribed by Roland Stragies; Matthias Schuster; Siegfried Blechert

Publisher
John Wiley and Sons
Year
2010
Weight
30 KB
Volume
30
Category
Article
ISSN
0931-7597

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✦ Synopsis

A Novel Ruthenium-Catalyzed Tandem Diyne Cycloisomerization-Cross Metathesis Process.

-Ruthenium-catalyzed cycloisomerization of hepta-1,6-diyne as well as related N-and O-containing symmetrical diynes (IV) in the presence of functionalized terminal olefins (II) yields five-membered cyclic products with variable unsaturated side chains (III) (10 examples). Cyclization -cross metathesis reaction of unsymmetrical diyne (IV) proceeds with marked regioselectivity. A plausible reaction mechanism for this novel tandem process is proposed.

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