The Isomerization of Olefins Part II. Thermal and Catalytic lsomerization of Olefins using Acids, Metals, Metal Complexes, or Boron Compounds as Catalysts

Hubert, Aurélia; Reimlinger, Hans

doi:10.1055/s-1970-21620

Cited by 65 publications

(20 citation statements)

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“…The results are shown in this section. isomerization transformations of alkenes in the presence of acidic catalysts [47]. Double-bond migration and cis/trans isomerization are facile transformations that can take place under mild conditions and they have been subject of intensive research to investigate the acidity of different catalysts [31, 47 -61].…”

Section: Metathesis Properties Of Ni/almcm-41 Catalystsmentioning

confidence: 99%

Experimental Investigation of the Reaction Network of Ethene to Propene over Ni/AlMCM‐41 Catalysts

Perea

Felischak

Wolff

et al. 2017

Chemie Ingenieur Technik

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The reaction network of the ethene-to-propene (ETP) reaction over Ni/AlMCM-41 catalysts was studied. This reaction consists of the dimerization of ethene, the isomerization of 1-butene, and the metathesis of ethene and 2-butene to propene. This work focused on the latter. ETP experiments followed by in situ diffuse reflectance infrared Fourier transform spectroscopy were carried out. Metathesis activities were evaluated by the isomerization of butenes, the metathesis of ethene and 2-butene, and the retro-metathesis of propene. Metathesis activities of Ni/AlMCM-41 catalysts were not observed. Thus, a conjunct polymerization of ethene to propene is proposed.

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Section: Metathesis Properties Of Ni/almcm-41 Catalystsmentioning

confidence: 99%

Experimental Investigation of the Reaction Network of Ethene to Propene over Ni/AlMCM‐41 Catalysts

Perea

Felischak

Wolff

et al. 2017

Chemie Ingenieur Technik

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“…Olefins are susceptible to isomerization triggered by acids and bases, as well as by metallic catalysts . On heterogeneous catalysts, these properties may be inherent to the support, viz.…”

Section: Opportunities Of Heterogeneous Grubbs Catalystsmentioning

confidence: 99%

Opportunities of Immobilized Homogeneous Metathesis Complexes as Prominent Heterogeneous Catalysts

2016

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A plethora of strategies for immobilizing well‐defined metathesis catalysts on solid supports have been developed over the past decades. Whereas most reviews on classical heterogeneous metathesis catalyst designs mainly discuss covalent binding approaches, we here extended this topic with non‐covalent surface science methods, a research area that gained interest recently. Within this context, the main focus was set on the immobilization of ruthenium alkylidenes or so‐called Grubbs complexes, as these catalysts are known for their high activity, stability and commercial viability. Besides giving an overview of different immobilization strategies, the wide diversity of supported Grubbs catalysts also allows for discussing implications of attaching Grubbs catalysts that go beyond the traditional benefits of heterogeneous catalysis, such as easy catalyst separation. More specifically, this Review will summarize several unique opportunities of immobilized homogeneous catalysts in liquid‐phase metathesis transformations in terms of impact on activity, stability, and product selectivity, as to highlight the economic potential, but without ignoring possible shortcomings and limitations.

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“…For their importance in pharmacology, see: Fü lö p et al (2001). For the reactivity of the cycloocta-1,5-diene in basic medium, see: Huber et al (1969Huber et al ( , 1970. For the preparation of analogous unsaturated cyclooctane esters, see: Garrido et al (2008).…”

Section: Related Literaturementioning

confidence: 99%

“…In our research group there has been an enormous interest in the synthesis of conjugated unsaturated esters used as starting material in the Michael addition of enantiomerically pure lithium amides (Davies et al, 2005) as a base tool in the asymmetric synthesis of β-amino acids and alkaloids because of their interest and value in the development of biologically active compounds for the pharmacology industry (Fülöp et al, 2001). Considering that the reactivity of the cycloocta-1,5-diene is very peculiar, highlighting its trend in basic medium to conjugate its double bonds (Huber et al, 1969) because of the greater thermodynamic stability (Huber et al, 1970), is necessary and important to establish the exact structure in this class of unsaturated rings. This conjugation was determined previously for an isomer of compound 1 (tert-butyl cyclooct-1,7-dienecarboxylate) (Garrido et al, 2008) and herein for compound 1 (tert-butylcyclooct-1,3dienecarboxylate) by R-X spectroscopy of compound 6 which confirms unequivocally its configuration and structure.…”

Section: Data Collectionmentioning

confidence: 99%

(3S,4S,E)-tert-Butyl 3,4-dibromo-5-oxocyclooct-1-enecarboxylate

et al. 2011

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The title compound, C13H18Br2O3, was prepared by a bromination reaction of (1E,3Z)-methyl 5-oxocycloocta-1,3-dienecarboxylate, which was obtained by an epoxydation reaction of tert-butyl cyclooct-1,3-dienecarboxylate. The crystal structure confirms unequivocally the absolute configuration of both chiral centres to be S. In the crystal, C—H⋯O interactions link the molecules into chains running along the c axis.

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The Isomerization of Olefins Part II. Thermal and Catalytic lsomerization of Olefins using Acids, Metals, Metal Complexes, or Boron Compounds as Catalysts

Cited by 65 publications

References 0 publications

Experimental Investigation of the Reaction Network of Ethene to Propene over Ni/AlMCM‐41 Catalysts

Experimental Investigation of the Reaction Network of Ethene to Propene over Ni/AlMCM‐41 Catalysts

Opportunities of Immobilized Homogeneous Metathesis Complexes as Prominent Heterogeneous Catalysts

(3S,4S,E)-tert-Butyl 3,4-dibromo-5-oxocyclooct-1-enecarboxylate

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The Isomerization of Olefins Part II. Thermal and Catalytic lsomerization of Olefins using Acids, Metals, Metal Complexes, or Boron Compounds as Catalysts

Cited by 65 publications

References 0 publications

Experimental Investigation of the Reaction Network of Ethene to Propene over Ni/AlMCM‐41 Catalysts

Experimental Investigation of the Reaction Network of Ethene to Propene over Ni/AlMCM‐41 Catalysts

Opportunities of Immobilized Homogeneous Metathesis Complexes as Prominent Heterogeneous Catalysts

(3S*,4S*,E)-tert-Butyl 3,4-dibromo-5-oxocyclooct-1-enecarboxylate

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(3S,4S,E)-tert-Butyl 3,4-dibromo-5-oxocyclooct-1-enecarboxylate