Cp2ZrCl2 – Et3Al reagent system in the homo-coupling of trimethylsilyl-substituted alkynes

Ilfir R. Ramazanov; Rita N. Kadikova; Aliya K. Amirova; Oleg S. Mozgovoj; Usein M. Dzhemilev

doi:10.1039/D1RA08268J

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Cp₂ZrCl₂ – Et₃Al reagent system in the homo-coupling of trimethylsilyl-substituted alkynes†

Ilfir R. Ramazanov,*^a Rita N. Kadikova,

^a Aliya K. Amirova,^a Oleg S. Mozgovoj^a and Usein M. Dzhemilev^a

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* Corresponding authors

^a Institute of Petrochemistry and Catalysis of Russian Academy of Sciences, 141 Prospekt Oktyabrya, Ufa 450075, Russian Federation
E-mail: ilfir.ramazanov@gmail.com

Abstract

The reaction of trimethylsilyl-substituted alkynes with 0.5 equivalents of Cp₂ZrCl₂ and 1 equivalent of Et₃Al in toluene at room temperature for 18 hours gives, after hydrolysis/deuterolysis or iodination, functionalized products of the homo-coupling of silyl-substituted alkynes in good yield. Trimethylsilyl-substituted α,ω-diynes react with the Cp₂ZrCl₂ – Et₃Al reagent system to give (1Z,2Z)-1,2-bis(iodo(trimethylsilyl)methylene)cycloalkanes after iodinolysis.

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Article information

DOI: https://doi.org/10.1039/D1RA08268J
Article type: Paper
Submitted: 11 Nov 2021
Accepted: 15 Nov 2021
First published: 13 Dec 2021
This article is Open Access

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RSC Adv., 2021,11, 39518-39522

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Cp₂ZrCl₂ – Et₃Al reagent system in the homo-coupling of trimethylsilyl-substituted alkynes

I. R. Ramazanov, R. N. Kadikova, A. K. Amirova, O. S. Mozgovoj and U. M. Dzhemilev, RSC Adv., 2021, 11, 39518 DOI: 10.1039/D1RA08268J

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