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1999 ring closure reactions ring closure reactions O 0130 21 - 051 Extension of the Tandem Pauson–Khand Reaction to [5.6.6.5]Tetra- cycles: A Unique Entry into cis-Fused Decalins. — Tandem Pauson–Khand reaction of the diene-diynes (IV), (VI), and (VIII) leads exclu- sively to formation of cis-fused decalins within the tetracyclic system (X). This cyclization involves the formation of six C–C bonds in a one-pot process. — (BRUENDL, MICHELLE M.; VAN ORNUM, SCOTT G.; CHAN, TZE-MING; COOK, JAMES M.; Tetrahedron Lett. 40 (1999) 6, 1113-1116; Dep. Chem., Univ. Wis., Milwaukee, WI 53201, USA; EN) 1

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Page 1: ChemInform Abstract: Extension of the Tandem Pauson—Khand Reaction to [5.6.6.5]Tetracycles: A Unique Entry into cis-Fused Decalins

1999 ring closure reactions

ring closure reactionsO 0130

21 - 051Extension of the Tandem Pauson–Khand Reaction to [5.6.6.5]Tetra-cycles: A Unique Entry into cis-Fused Decalins. — TandemPauson–Khand reaction of the diene-diynes (IV), (VI), and (VIII) leads exclu-sively to formation of cis-fused decalins within the tetracyclic system (X). Thiscyclization involves the formation of six C–C bonds in a one-pot process. —(BRUENDL, MICHELLE M.; VAN ORNUM, SCOTT G.; CHAN, TZE-MING;COOK, JAMES M.; Tetrahedron Lett. 40 (1999) 6, 1113-1116; Dep. Chem.,Univ. Wis., Milwaukee, WI 53201, USA; EN)

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