Interaction of the Negishi reagent Cp2ZrBun 2 with 1,4-bis(tert-butyl)butadiyne期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Interaction of the Negishi reagent Cp2ZrBun 2 with 1,4-bis(tert-butyl)butadiyne

Authors:	V. V. Burlakov V. S. Bogdanov K. A. Lyssenko A. Spannenberg P. V. Petrovskii W. Baumann P. Arndt M. Kh. Minacheva B. N. Strunin U. Rosenthal V. B. Shur

Affiliation:	1. A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 ul. Vavilova, 119991, Moscow, Russian Federation 2. Leibniz Institute of Catalysis, Rostock University, 29a Albert Einstein Strasse, D-18059, Rostock, Germany

Abstract:	The interaction of the Negishi reagent Cp₂ZrBuⁿ ₂ with 1,4-bis(tert-butyl)butadiyne Bu^tC≡C-C≡CBu^t leads to four products: a five-membered zirconacyclocumulene complex Cp₂Zr(η⁴-Bu^tC₄Bu^t) (2) synthesized earlier by another method, the previously unknown seven-membered zirconacyclocumulene Cp₂Zr[η⁴-Bu^tC₄(Bu^t)-C(C₂Bu^t)=CBu^t] (3) as well as small amounts of the zirconocene binuclear butatrienyl complex Cp₂(Buⁿ)Zr(Bu^tC₄Bu^t)Zr(Buⁿ)Cp₂ (4), and the dimeric acetylide [Cp₂ZrC≡CBu^t]₂ (5). The structure of complexes 2–5 was established by X-ray diffraction studies.

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