Synthesis and Structure of a Tungsten η3-Enynyl Complex Resulting from Facile Alkynyl-Vlnylldene Coupling

Anne K. McMullen; John P. Selegue; Jin Guu Wang

doi:10.1021/om00056a005

Synthesis and Structure of a Tungsten η³-Enynyl Complex Resulting from Facile Alkynyl-Vlnylldene Coupling

Anne K. McMullen
, John P. Selegue
, Jin Guu Wang

Chemistry

Producción científica: Article › revisión exhaustiva

68 Citas (Scopus)

Resumen

Deprotonation of the bis(alkyne) complex [W-(CO)(η₂-HC=CCMe₃)₂(Cp*)][BF₄] (1) with KH gives the alkynyl/alkyne complex [W(C=CCMe₃)(CO)(η²-HC= CCMe₃)(Cp*)] (2), methylation of which gives the catbnic alkyne/vinylidene complex [W(C=CMeCMe₃)(CO)(η²-HC=CCMe₃)(Cp*)][BF₄] (3). Deprotonation of 3 with sodium bis(trimethylsilyl)amide under CO gives the crys-tallographically characterized η³-enynyl complex [W-(CO)₂(η³-Me₃CC=CC=CMeCMe₃)(Cp*)] (4) via the facile insertion of a vinylidene ligand into a metal-alkynyl σ-bond.

Idioma original	English
Páginas (desde-hasta)	3421-3423
Número de páginas	3
Publicación	Organometallics
Volumen	10
N.º	10
DOI	https://doi.org/10.1021/om00056a005
Estado	Published - oct 1 1991

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Organic Chemistry
Inorganic Chemistry

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10.1021/om00056a005

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title = "Synthesis and Structure of a Tungsten η3-Enynyl Complex Resulting from Facile Alkynyl-Vlnylldene Coupling",

abstract = "Deprotonation of the bis(alkyne) complex [W-(CO)(η2-HC=CCMe3)2(Cp*)][BF4] (1) with KH gives the alkynyl/alkyne complex [W(C=CCMe3)(CO)(η2-HC= CCMe3)(Cp*)] (2), methylation of which gives the catbnic alkyne/vinylidene complex [W(C=CMeCMe3)(CO)(η2-HC=CCMe3)(Cp*)][BF4] (3). Deprotonation of 3 with sodium bis(trimethylsilyl)amide under CO gives the crys-tallographically characterized η3-enynyl complex [W-(CO)2(η3-Me3CC=CC=CMeCMe3)(Cp*)] (4) via the facile insertion of a vinylidene ligand into a metal-alkynyl σ-bond.",

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AU - McMullen, Anne K.

AU - Selegue, John P.

AU - Wang, Jin Guu

PY - 1991/10/1

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N2 - Deprotonation of the bis(alkyne) complex [W-(CO)(η2-HC=CCMe3)2(Cp*)][BF4] (1) with KH gives the alkynyl/alkyne complex [W(C=CCMe3)(CO)(η2-HC= CCMe3)(Cp*)] (2), methylation of which gives the catbnic alkyne/vinylidene complex [W(C=CMeCMe3)(CO)(η2-HC=CCMe3)(Cp*)][BF4] (3). Deprotonation of 3 with sodium bis(trimethylsilyl)amide under CO gives the crys-tallographically characterized η3-enynyl complex [W-(CO)2(η3-Me3CC=CC=CMeCMe3)(Cp*)] (4) via the facile insertion of a vinylidene ligand into a metal-alkynyl σ-bond.

AB - Deprotonation of the bis(alkyne) complex [W-(CO)(η2-HC=CCMe3)2(Cp*)][BF4] (1) with KH gives the alkynyl/alkyne complex [W(C=CCMe3)(CO)(η2-HC= CCMe3)(Cp*)] (2), methylation of which gives the catbnic alkyne/vinylidene complex [W(C=CMeCMe3)(CO)(η2-HC=CCMe3)(Cp*)][BF4] (3). Deprotonation of 3 with sodium bis(trimethylsilyl)amide under CO gives the crys-tallographically characterized η3-enynyl complex [W-(CO)2(η3-Me3CC=CC=CMeCMe3)(Cp*)] (4) via the facile insertion of a vinylidene ligand into a metal-alkynyl σ-bond.

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