scholarly journals New Catalytic Activity of Insoluble Polymer-Supported Crown Ethers for Addition Reaction of Oxirane with Active Ester

1991 ◽  
Vol 23 (12) ◽  
pp. 1467-1472
Author(s):  
Tadatomi Nishikubo ◽  
Yoriatsu Sugimoto ◽  
Masao Tomoi
Keyword(s):  
Catalytic Activity ◽  
Crown Ethers ◽  
Addition Reaction ◽  
Active Ester ◽  
Insoluble Polymer ◽  
Polymer Supported

scholarly journals Addition Reaction of Epoxy Compounds with Carbon Dioxide Using Insoluble Polymer-Supported Crown Ether Complexes as Catalysts.

1993 ◽  
Vol 50 (7) ◽  
pp. 577-582 ◽  
Author(s):  
Jun YAMASHITA ◽  
Atsushi KAMEYAMA ◽  
Tadatomi NISHIKUBO ◽  
Wakiti FUKUDA ◽  
Masao TOMOI
Keyword(s):  
Carbon Dioxide ◽  
Crown Ether ◽  
Addition Reaction ◽  
Crown Ether Complexes ◽  
Insoluble Polymer ◽  
Polymer Supported

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.

ChemInform Abstract: Investigations in the Crown Ether Series. Part 3. Catalytic Activity of Crown Ethers and Their Immobilized Analogues.

ChemInform ◽  
1988 ◽  
Vol 19 (28) ◽  
Author(s):  
N. I. ABAKUMOVA ◽  
I. P. KOLENKO ◽  
L. A. PETROV ◽  
A. A. NOVOSELOVA ◽  
L. M. GUS'KOVA
Keyword(s):  
Catalytic Activity ◽  
Crown Ether ◽  
Crown Ethers
Sign in / Sign up

Export Citation Format

Share Document