a rearrangement to a zirconium—alkenylidene in the insertion of dihalocarbenoids and acetylides...

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2007 Cyclopentane derivatives Q 0030 A Rearrangement to a Zirconium—Alkenylidene in the Insertion of Dihalocar- benoids and Acetylides into Zirconacycles. — An efficient assembly of bicy- clooctenes (IV) is presented, involving the generation of a zirconacyclic intermediate from enyne (I), carbene (II) and a zirconacene complex followed by rearrangement to a zirconium—alkenylidene complex on reaction with the lithium acetylide. — (THOMAS, E.; DIXON, S.; WHITBY*, R. J.; Angew. Chem., Int. Ed. 45 (2006) 42, 7070-7072; Sch. Chem., Univ. Southampton, Southampton SO17 1BJ, UK; Eng.) — Mischke 09- 068

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Page 1: A Rearrangement to a Zirconium—Alkenylidene in the Insertion of Dihalocarbenoids and Acetylides into Zirconacycles

2007

Cyclopentane derivativesQ 0030 A Rearrangement to a Zirconium—Alkenylidene in the Insertion of Dihalocar-

benoids and Acetylides into Zirconacycles. — An efficient assembly of bicy-clooctenes (IV) is presented, involving the generation of a zirconacyclic intermediate from enyne (I), carbene (II) and a zirconacene complex followed by rearrangement to a zirconium—alkenylidene complex on reaction with the lithium acetylide. — (THOMAS, E.; DIXON, S.; WHITBY*, R. J.; Angew. Chem., Int. Ed. 45 (2006) 42, 7070-7072; Sch. Chem., Univ. Southampton, Southampton SO17 1BJ, UK; Eng.) — Mischke

09- 068