Reaction of an alkynyllithium reagent with boron trifluoride: The structure of a likely intermediate in alkynyl anion chemistry

John E. Davies; Paul R. Raithby; Ronald Snaith; Andrew E.H. Wheatley

doi:10.1039/a704185c

Reaction of an alkynyllithium reagent with boron trifluoride: The structure of a likely intermediate in alkynyl anion chemistry

John E. Davies, Paul R. Raithby, Ronald Snaith, Andrew E.H. Wheatley

University of Cambridge

Research output: Contribution to journal › Article › peer-review

7 Citations (SciVal)

Abstract

Lithium phenylacetylide reacts with 1 equiv. of BF₃·OEt₂ in thf-toluene to yield both a thf adduct of tris(phenylacetylido)borane 2, which is probably the true intermediate in RC≡CLi/BF₃-promoted alkynyl anion chemistry, and LiBF₄, products which are considered to form via sequential LiF elimination from previously proposed acetylidoborate intermediates; complex 2 is the first structurally characterised tris(alkynyl)borane and in the solid state it forms an unusual hydrogen-bonded dimer.

Original language	English
Pages (from-to)	1797-1798
Number of pages	2
Journal	Chemical Communications
Issue number	18
DOIs	https://doi.org/10.1039/a704185c
Publication status	Published - 1 Jan 1997

ASJC Scopus subject areas

Catalysis
Electronic, Optical and Magnetic Materials
Ceramics and Composites
General Chemistry
Surfaces, Coatings and Films
Metals and Alloys
Materials Chemistry

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10.1039/a704185c

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abstract = "Lithium phenylacetylide reacts with 1 equiv. of BF3·OEt2 in thf-toluene to yield both a thf adduct of tris(phenylacetylido)borane 2, which is probably the true intermediate in RC≡CLi/BF3-promoted alkynyl anion chemistry, and LiBF4, products which are considered to form via sequential LiF elimination from previously proposed acetylidoborate intermediates; complex 2 is the first structurally characterised tris(alkynyl)borane and in the solid state it forms an unusual hydrogen-bonded dimer.",

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AU - Davies, John E.

AU - Raithby, Paul R.

AU - Snaith, Ronald

AU - Wheatley, Andrew E.H.

PY - 1997/1/1

Y1 - 1997/1/1

N2 - Lithium phenylacetylide reacts with 1 equiv. of BF3·OEt2 in thf-toluene to yield both a thf adduct of tris(phenylacetylido)borane 2, which is probably the true intermediate in RC≡CLi/BF3-promoted alkynyl anion chemistry, and LiBF4, products which are considered to form via sequential LiF elimination from previously proposed acetylidoborate intermediates; complex 2 is the first structurally characterised tris(alkynyl)borane and in the solid state it forms an unusual hydrogen-bonded dimer.

AB - Lithium phenylacetylide reacts with 1 equiv. of BF3·OEt2 in thf-toluene to yield both a thf adduct of tris(phenylacetylido)borane 2, which is probably the true intermediate in RC≡CLi/BF3-promoted alkynyl anion chemistry, and LiBF4, products which are considered to form via sequential LiF elimination from previously proposed acetylidoborate intermediates; complex 2 is the first structurally characterised tris(alkynyl)borane and in the solid state it forms an unusual hydrogen-bonded dimer.

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Reaction of an alkynyllithium reagent with boron trifluoride: The structure of a likely intermediate in alkynyl anion chemistry

Abstract

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