Encapsulating ruthenium in silica using a single source precursor: Differing outcomes for a cycloaddition reaction

Chandan Kr Barik; Rakesh Ganguly; Felipe Garcia; Weng Kee Leong

doi:10.1016/j.ica.2020.119833

Encapsulating ruthenium in silica using a single source precursor: Differing outcomes for a cycloaddition reaction

Chandan Kr Barik, Rakesh Ganguly, Felipe Garcia, Weng Kee Leong^*

^*Corresponding author for this work

Nanyang Technological University

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

1 Citation (Scopus)

Abstract

The complex [Ru₂(CO)₄(µ-O₂CCH₂OSi(OEt)₃)₂(PPh₃)₂] was used as a single-source precursor to prepare silica-encapsulated ruthenium via hydrolysis followed by calcination. While the silica-encapsulated ruthenium catalyst and the molecular precursor both catalysed the [2 + 1] cycloaddition reaction between alkenes and ethyl diazoacetate to form cyclopropanes, the intermediate hydrolysis product partially directed the reaction towards [2 + 3] cycloaddition to form cyclic five-membered pyrazolines.

Original language	English
Article number	119833
Journal	Inorganica Chimica Acta
Volume	512
DOIs	https://doi.org/10.1016/j.ica.2020.119833
Publication status	Published - Nov 1 2020
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2020 Elsevier B.V.

ASJC Scopus Subject Areas

Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

Keywords

Cycloaddition
Heterogeneous catalysis
Ruthenium complexes
Silica
Single source precursor

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10.1016/j.ica.2020.119833

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title = "Encapsulating ruthenium in silica using a single source precursor: Differing outcomes for a cycloaddition reaction",

abstract = "The complex [Ru2(CO)4(µ-O2CCH2OSi(OEt)3)2(PPh3)2] was used as a single-source precursor to prepare silica-encapsulated ruthenium via hydrolysis followed by calcination. While the silica-encapsulated ruthenium catalyst and the molecular precursor both catalysed the [2 + 1] cycloaddition reaction between alkenes and ethyl diazoacetate to form cyclopropanes, the intermediate hydrolysis product partially directed the reaction towards [2 + 3] cycloaddition to form cyclic five-membered pyrazolines.",

keywords = "Cycloaddition, Heterogeneous catalysis, Ruthenium complexes, Silica, Single source precursor",

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doi = "10.1016/j.ica.2020.119833",

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AU - Barik, Chandan Kr

AU - Ganguly, Rakesh

AU - Garcia, Felipe

AU - Leong, Weng Kee

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AB - The complex [Ru2(CO)4(µ-O2CCH2OSi(OEt)3)2(PPh3)2] was used as a single-source precursor to prepare silica-encapsulated ruthenium via hydrolysis followed by calcination. While the silica-encapsulated ruthenium catalyst and the molecular precursor both catalysed the [2 + 1] cycloaddition reaction between alkenes and ethyl diazoacetate to form cyclopropanes, the intermediate hydrolysis product partially directed the reaction towards [2 + 3] cycloaddition to form cyclic five-membered pyrazolines.

KW - Cycloaddition

KW - Heterogeneous catalysis

KW - Ruthenium complexes

KW - Silica

KW - Single source precursor

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Encapsulating ruthenium in silica using a single source precursor: Differing outcomes for a cycloaddition reaction

Abstract

Bibliographical note

ASJC Scopus Subject Areas

Keywords

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