ACTIVATING EFFECT OF AlCl 3  IN HOMO-COUPLING REACTION OF ACETYLENE COMPOUNDS UNDER THE ACTION OF Mg–Cp 2 ZrCl 2  REAGENT SYSTEMS

I. R. Ramazanov; Рамазанов И. Р.; F. T. Sadykova; Садыкова Ф. Т.; T. P. Zosim; Зосим Т. П.; K. S. Frolova; Фролова К. С.; U. M. Dzhemilev; Джемилев У. М.

doi:10.31857/S2686953522600878

ACTIVATING EFFECT OF AlCl₃ IN HOMO-COUPLING REACTION OF ACETYLENE COMPOUNDS UNDER THE ACTION OF Mg–Cp₂ZrCl₂ REAGENT SYSTEMS

Authors: Ramazanov I.R.¹, Sadykova F.T.¹, Zosim T.P.¹, Frolova K.S.¹, Dzhemilev U.M.²
Affiliations:
1. Institute of Petrochemistry and Catalysis, Ufa Federal Research Center, Russian Academy of Sciences
2. N.D. Zelinsky Institute of Organic Chemistry of Russian Academy of Sciences
Issue: Vol 512, No 1 (2023)
Pages: 46-51
Section: CHEMISTRY
URL: https://rjmseer.com/2686-9535/article/view/651950
DOI: https://doi.org/10.31857/S2686953522600878
EDN: https://elibrary.ru/HGOXOC
ID: 651950

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Abstract

The activating effect of AlCl₃ in the amount of 10 mol. % in the homo-coupling of alkyl-, phenyl-, and silyl-substituted acetylenes with the Mg–Cp₂ZrCl₂ reagent system was found for the first time. The unique nature of this activation is indicated by the fact that in the presence of 10 mol. % of Lewis acids such as BF₃ ⋅ Et₂O, Me₃SiCl, InCl₃, and SnCl₄, the reaction with 5-decyne does not occur even after 5 h, while in the presence of AlCl₃, homocoupling products are selectively formed in high yield in 10 min at room temperature.

Keywords

alkynes, homo-coupling, cyclometallation, zirconacyclopentadienes, zirconocene

References

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