Heterogeneous palladiumcatalysts for the heck reaction

Jari Kiviaho, Taka-Aki Hanaoka, Y. Kubota, Yoshihiro Sugi

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

The vinylation of iodobenzene with methyl acrylate was studied using palladium-based heterogeneous catalysts.
Methyl cinnamate was formed as vinylation product and benzene as side product. All catalysts were of the type SiO2X-(NH)2-Pd-L2, where L = P(C6H5)3 or C6H5CN and X = Sn, Al or Ti. The catalysts were stable and could be reused several times in normal atmosphere without suffering appreciable loss in catalytic activity.
The activity of the catalysts was good even at low temperature, and selectivities were very high. Strong interaction indicating the existence of chemical bonding was found between the modified silica support and palladium complex.
A model of the active surface compound is proposed and confirmed.
Original languageEnglish
Pages (from-to)25-31
JournalJournal of Molecular Catalysis A: Chemical
Volume101
Issue number1
DOIs
Publication statusPublished - 1995
MoE publication typeA1 Journal article-refereed

Fingerprint

catalysts
Catalysts
Palladium
palladium
Catalyst activity
products
acrylates
Benzene
Silicon Dioxide
catalytic activity
selectivity
benzene
Silica
silicon dioxide
atmospheres
Temperature
methyl cinnamate
methyl acrylate
iodobenzene

Cite this

Kiviaho, Jari ; Hanaoka, Taka-Aki ; Kubota, Y. ; Sugi, Yoshihiro. / Heterogeneous palladiumcatalysts for the heck reaction. In: Journal of Molecular Catalysis A: Chemical. 1995 ; Vol. 101, No. 1. pp. 25-31.
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abstract = "The vinylation of iodobenzene with methyl acrylate was studied using palladium-based heterogeneous catalysts. Methyl cinnamate was formed as vinylation product and benzene as side product. All catalysts were of the type SiO2X-(NH)2-Pd-L2, where L = P(C6H5)3 or C6H5CN and X = Sn, Al or Ti. The catalysts were stable and could be reused several times in normal atmosphere without suffering appreciable loss in catalytic activity. The activity of the catalysts was good even at low temperature, and selectivities were very high. Strong interaction indicating the existence of chemical bonding was found between the modified silica support and palladium complex. A model of the active surface compound is proposed and confirmed.",
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Heterogeneous palladiumcatalysts for the heck reaction. / Kiviaho, Jari; Hanaoka, Taka-Aki; Kubota, Y.; Sugi, Yoshihiro.

In: Journal of Molecular Catalysis A: Chemical, Vol. 101, No. 1, 1995, p. 25-31.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Heterogeneous palladiumcatalysts for the heck reaction

AU - Kiviaho, Jari

AU - Hanaoka, Taka-Aki

AU - Kubota, Y.

AU - Sugi, Yoshihiro

N1 - Project code: KET2415

PY - 1995

Y1 - 1995

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AB - The vinylation of iodobenzene with methyl acrylate was studied using palladium-based heterogeneous catalysts. Methyl cinnamate was formed as vinylation product and benzene as side product. All catalysts were of the type SiO2X-(NH)2-Pd-L2, where L = P(C6H5)3 or C6H5CN and X = Sn, Al or Ti. The catalysts were stable and could be reused several times in normal atmosphere without suffering appreciable loss in catalytic activity. The activity of the catalysts was good even at low temperature, and selectivities were very high. Strong interaction indicating the existence of chemical bonding was found between the modified silica support and palladium complex. A model of the active surface compound is proposed and confirmed.

U2 - 10.1016/1381-1169(95)00051-8

DO - 10.1016/1381-1169(95)00051-8

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VL - 101

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JO - Journal of Molecular Catalysis A: Chemical

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