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- W2952389076 abstract "Bis(alkynyl)silanes react with low valent zirconocene species to afford zirconacyclobutene intermedi- ates. These in situ generated reactive organometallic intermediates can react with alkynes, ketones, aldehydes, and isocyanates by means of a novel skele- tal rearrangement. When a zirconacy- clobutene intermediate was treated with an alkyne, an a-alkynylsilyl zirco- nacyclopentadiene was formed. Addi- tion of dimethyl acetylenedicarboxylate (DMAD) and CuCl resulted in one-pot formation of an alkynylsilyl-benzene derivative from three different alkynes. At a higher temperature, the a-alkynyl- silylzirconacyclopentadiene was trans- formed by means of an intramolecular skeletal rearrangement to a zirconacy- clohexadiene-silacyclobutene fused- ring compound, which reacted with DMAD in the presence of CuCl af- fording the same alkynylsilyl-benzene derivative. When treated with a ketone, an aldehdye, or an isocyanate, the zirconocyclobutene intermediate also underwent the above-mentioned skeletal rearrangement, generating zir- conocene-mediated cross-coupling products." @default.
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- W2952389076 date "2006-03-28" @default.
- W2952389076 modified "2023-09-24" @default.
- W2952389076 title "Zirconocene-Mediated Intermolecular Coupling of Si-Tethered Diynes with Alkynes, Ketones, Aldehydes, and Isocyanates by Means of Novel Skeletal Rearrangement of Zirconacyclobutene—Silacyclobutene and Zirconacyclohexadiene—Silacyclobutene Fused-Ring Intermediates." @default.
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- W2952389076 doi "https://doi.org/10.1002/chin.200613182" @default.
- W2952389076 hasPublicationYear "2006" @default.
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