Silica-supported tungsten carbynes (≡SiO)xW(≡CH)(Me)y (x = 1, y = 2; X = 2, y = 1): New efficient catalysts for alkyne cyclotrimerization

Nassima Riache; Alexandre Déry; Emmanuel Callens; Albert Poater; Manoja Samantaray; Raju Dey; Jinhua Hong; Kun Li; Luigi Cavallo; Jean-Marie Basset

doi:10.1021/om500684e

Silica-supported tungsten carbynes (≡SiO)xW(≡CH)(Me)y (x = 1, y = 2; X = 2, y = 1): New efficient catalysts for alkyne cyclotrimerization

Nassima Riache, Alexandre Déry, Emmanuel Callens, Albert Poater, Manoja Samantaray, Raju Dey, Jinhua Hong, Kun Li, Luigi Cavallo, Jean-Marie Basset

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

24 Scopus citations

Abstract

The activity of silica-supported tungsten carbyne complexes (≡SiO)xW(≡CH)(Me)y (x = 1, y = 2; x = 2, y = 1) toward alkynes is reported. We found that they are efficient precatalysts for terminal alkyne cyclotrimerization with high TONs. We also demonstrate that this catalyst species is active for alkyne cyclotrimerization without the formation of significant alkyne metathesis products. Additional DFT calculations highlight the importance of the W coordination sphere in supporting this experimental behavior.

Original language	English (US)
Pages (from-to)	690-695
Number of pages	6
Journal	Organometallics
Volume	34
Issue number	4
DOIs	https://doi.org/10.1021/om500684e
State	Published - Feb 2 2015

ASJC Scopus subject areas

Organic Chemistry
Physical and Theoretical Chemistry
Inorganic Chemistry

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@article{a7fbd65be1cb4a5eae02d7a6b6b7d6b2,

title = "Silica-supported tungsten carbynes (≡SiO)xW(≡CH)(Me)y (x = 1, y = 2; X = 2, y = 1): New efficient catalysts for alkyne cyclotrimerization",

abstract = "The activity of silica-supported tungsten carbyne complexes (≡SiO)xW(≡CH)(Me)y (x = 1, y = 2; x = 2, y = 1) toward alkynes is reported. We found that they are efficient precatalysts for terminal alkyne cyclotrimerization with high TONs. We also demonstrate that this catalyst species is active for alkyne cyclotrimerization without the formation of significant alkyne metathesis products. Additional DFT calculations highlight the importance of the W coordination sphere in supporting this experimental behavior.",

author = "Nassima Riache and Alexandre D{\'e}ry and Emmanuel Callens and Albert Poater and Manoja Samantaray and Raju Dey and Jinhua Hong and Kun Li and Luigi Cavallo and Jean-Marie Basset",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: Research reported in this publication was supported by the King Abdullah University of Science and Technology. A.P. thanks the Spanish MINECO for a Ramon y Cajal contract (RYC-2009-05226) and the European Commission for a Career Integration Grant (CIG09-GA-2011-293900).",

year = "2015",

month = feb,

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doi = "10.1021/om500684e",

language = "English (US)",

volume = "34",

pages = "690--695",

journal = "Organometallics",

issn = "0276-7333",

publisher = "American Chemical Society",

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T1 - Silica-supported tungsten carbynes (≡SiO)xW(≡CH)(Me)y (x = 1, y = 2; X = 2, y = 1): New efficient catalysts for alkyne cyclotrimerization

AU - Riache, Nassima

AU - Déry, Alexandre

AU - Callens, Emmanuel

AU - Poater, Albert

AU - Samantaray, Manoja

AU - Dey, Raju

AU - Hong, Jinhua

AU - Li, Kun

AU - Cavallo, Luigi

AU - Basset, Jean-Marie

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: Research reported in this publication was supported by the King Abdullah University of Science and Technology. A.P. thanks the Spanish MINECO for a Ramon y Cajal contract (RYC-2009-05226) and the European Commission for a Career Integration Grant (CIG09-GA-2011-293900).

PY - 2015/2/2

Y1 - 2015/2/2

N2 - The activity of silica-supported tungsten carbyne complexes (≡SiO)xW(≡CH)(Me)y (x = 1, y = 2; x = 2, y = 1) toward alkynes is reported. We found that they are efficient precatalysts for terminal alkyne cyclotrimerization with high TONs. We also demonstrate that this catalyst species is active for alkyne cyclotrimerization without the formation of significant alkyne metathesis products. Additional DFT calculations highlight the importance of the W coordination sphere in supporting this experimental behavior.

AB - The activity of silica-supported tungsten carbyne complexes (≡SiO)xW(≡CH)(Me)y (x = 1, y = 2; x = 2, y = 1) toward alkynes is reported. We found that they are efficient precatalysts for terminal alkyne cyclotrimerization with high TONs. We also demonstrate that this catalyst species is active for alkyne cyclotrimerization without the formation of significant alkyne metathesis products. Additional DFT calculations highlight the importance of the W coordination sphere in supporting this experimental behavior.

UR - http://hdl.handle.net/10754/564064

UR - https://pubs.acs.org/doi/10.1021/om500684e

UR - http://www.scopus.com/inward/record.url?scp=84923331720&partnerID=8YFLogxK

U2 - 10.1021/om500684e

DO - 10.1021/om500684e

M3 - Article

SN - 0276-7333

VL - 34

SP - 690

EP - 695

JO - Organometallics

JF - Organometallics

IS - 4

ER -

Silica-supported tungsten carbynes (≡SiO)xW(≡CH)(Me)y (x = 1, y = 2; X = 2, y = 1): New efficient catalysts for alkyne cyclotrimerization

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