ChemInform Abstract: Selective Synthesis of Alkynes by Catalytic Dehydrogenation of Alkenes over Polymer-Supported Palladium Acetate in the Liquid Phase.

1986 ◽  
Vol 17 (16) ◽  
Author(s):  
G. CUM ◽  
R. GALLO ◽  
S. IPSALE ◽  
A. SPADARO
Keyword(s):  
Liquid Phase ◽  
Palladium Acetate ◽  
Catalytic Dehydrogenation ◽  
Selective Synthesis ◽  
Supported Palladium ◽  
Polymer Supported

scholarly journals ZnAlMCM-41; a very ecofriendly and reusable solid acid catalyst for highly selective synthesis of 1, 3-dioxanes by Prins cyclization of olefins

2021 ◽  
Author(s):  
Manickam Selvaraj ◽  
Mohammed A. Assiri ◽  
Hari Singh ◽  
Jimmy Nelson Appaturi ◽  
Subrahmanyam Ch ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Selective Synthesis ◽  
Comparison Study ◽  
Catalytic Method ◽  
Prins Cyclization ◽  
Heterogeneous Catalytic

Prins cyclization of styrene (SE) with paraformaldehyde (PFCHO) was conducted with mesoporous ZnAlMCM-41 catalysts for synthesis of 4-phenyl-1,3-dioxane (4-PDO) under a liquid phase heterogeneous catalytic method. For comparison study, the...

A Selective Synthesis of Unsymmetrical 1,1'-Methylenebisdiazoles by Solid-liquid Phase Transfer Catalysis

Heterocycles ◽  
1986 ◽  
Vol 24 (8) ◽  
pp. 2233 ◽  
Author(s):  
Jos� Elguero ◽  
Sebastian Juli� ◽  
Carlos Mart地ez-Martorell
Keyword(s):  
Liquid Phase ◽  
Phase Transfer Catalysis ◽  
Phase Transfer ◽  
Selective Synthesis ◽  
Solid Liquid

scholarly journals Polystyrene-Supported Acyclic Diaminocarbene Palladium Complexes in Sonogashira Cross-Coupling: Stability vs. Catalytic Activity

Catalysts ◽  
2018 ◽  
Vol 8 (4) ◽  
pp. 141 ◽  
Author(s):  
Vladimir Mikhaylov ◽  
Viktor Sorokoumov ◽  
Denis Liakhov ◽  
Alexander Tskhovrebov ◽  
Irina Balova
Keyword(s):  
Catalytic Activity ◽  
High Activity ◽  
Cross Coupling ◽  
Palladium Complexes ◽  
Lower Activity ◽  
Coupling Conditions ◽  
Acyclic Diaminocarbene ◽  
Supported Palladium ◽  
Polymer Supported

Two types of immobilized on the amino-functionalized polystyrene-supported acyclic diaminocarbene palladium complexes (ADC-PdII) are investigated under Sonogashira cross-coupling conditions. Depending on substituents in the diaminocarbene fragment immobilized ADC-PdII, systems are found to have different catalytic activity and stability regarding Pd-leaching. PdII-diaminocarbenes possessing protons at both nitrogen atoms smoothly decompose into Pd0-containing species providing a catalytic “cocktail system” with high activity and ability to reuse within nine runs. Polymer-supported palladium (II) complex bearing NBn–Ccarbene–NH-moiety exhibits greater stability while noticeably lower activity under Sonogashira cross-coupling. Four molecular ADC-PdII complexes are also synthesized and investigated with the aim of confirming proposed base-promoted pathway of ADC-PdII conversion through carbodiimide into an active Pd0 forms.

Supported palladium nanoparticles as switchable catalyst for aldehyde conjugate/s and acetate ester syntheses from alcohols

2017 ◽  
Vol 41 (9) ◽  
pp. 3242-3245 ◽  
Author(s):  
Sandeep Kumar ◽  
Abha Chaudhary ◽  
Bandna Bandna ◽  
Dhananjay Bhattacherjee ◽  
Vandna Thakur ◽  
...  
Keyword(s):  
Palladium Nanoparticles ◽  
Acetate Esters ◽  
Acetate Ester ◽  
Supported Palladium ◽  
Polymer Supported ◽  
Supported Pd

Polymer-supported Pd(0) (Pd@PS) nanoparticles (NPs) were explored as a switchable catalyst for oxidative aldehyde conjugate/s (AC/s) and acetate esters (AEs) syntheses from alcohols.

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