Synthesis, structure and catalytic application of lead(ii) complexes in cyanosilylation reactions

2015 ◽  
Vol 44 (1) ◽  
pp. 268-280 ◽  
Author(s):  
Anirban Karmakar ◽  
Susanta Hazra ◽  
M. Fátima C. Guedes da Silva ◽  
Armando J. L. Pombeiro
Keyword(s):  
Carboxylic Acid ◽  
Heterogeneous Catalysts ◽  
Trimethylsilyl Cyanide ◽  
Catalytic Application

3-Aminopyrazine-2-carboxylic acid is utilized to synthesize six new Pb(ii) complexes with various dimensionalities, which act as heterogeneous catalysts for cyanosilylation of aldehydes with trimethylsilyl cyanide.

Highly Diastereoselective Hydrogenation of Furan-2-carboxylic Acid Derivatives on Heterogeneous Catalysts

Synlett ◽  
2009 ◽  
Vol 2009 (03) ◽  
pp. 461-465 ◽  
Author(s):  
Armin Börner ◽  
Klaus Jähnisch ◽  
Michael Sebek ◽  
Jens Holz
Keyword(s):  
Carboxylic Acid ◽  
Heterogeneous Catalysts ◽  
Diastereoselective Hydrogenation

scholarly journals Silica-supported chlorometallate(iii) ionic liquids as recyclable catalysts for Diels–Alder reaction under solventless conditions

2016 ◽  
Vol 6 (22) ◽  
pp. 8129-8137 ◽  
Author(s):  
Karolina Matuszek ◽  
Anna Chrobok ◽  
Piotr Latos ◽  
Magdalena Markiton ◽  
Katarzyna Szymańska ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Heterogeneous Catalysts ◽  
Alder Reaction ◽  
Diels Alder ◽  
Catalytic Application ◽  
Diels Alder Reaction ◽  
Recyclable Catalysts

The first catalytic application of supported chlorometallate(iii) ionic liquids as recyclable heterogeneous catalysts for a Diels–Alder reaction under solventless conditions.

Zinc amidoisophthalate complexes and their catalytic application in the diastereoselective Henry reaction

2015 ◽  
Vol 39 (4) ◽  
pp. 3004-3014 ◽  
Author(s):  
Anirban Karmakar ◽  
M. Fátima C. Guedes da Silva ◽  
Susanta Hazra ◽  
Armando J. L. Pombeiro
Keyword(s):  
Heterogeneous Catalysts ◽  
Henry Reaction ◽  
Catalytic Application

5-Propionamidoisophthalic acid and 5-benzamidoisophthalic acid are used to synthesize new zinc(ii) complexes which act as heterogeneous catalysts for the diastereoselective nitroaldol (Henry) reaction.

scholarly journals 1D Zn(II) Coordination Polymers as Effective Heterogeneous Catalysts in Microwave-Assisted Single-Pot Deacetalization-Knoevenagel Tandem Reactions in Solvent-Free Conditions

Catalysts ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 90
Author(s):  
Anup Paul ◽  
Anirban Karmakar ◽  
M. Fátima C. Guedes da Silva ◽  
Armando J. L. Pombeiro
Keyword(s):  
Carboxylic Acid ◽  
Diffraction Analysis ◽  
Heterogeneous Catalysts ◽  
Topological Analysis ◽  
Solvent Free ◽  
Tandem Reactions ◽  
X Ray Diffraction ◽  
X Ray ◽  
Microwave Assisted ◽  
Solvent Free Conditions

The new 1D CPs [Zn(L1)(H2O)4]n.nH2O (1) and [Zn(L2)(H2O)2]n (2) [L1 = 1,1′-(ethane-1,2-diyl)bis(6-oxo-1,6-dihydropyridine-3-carboxylic acid); L2 = 1,1′-(propane-1,3-diyl)bis(6-oxo-1,6-dihydropyridine-3-carboxylic acid)] were prepared from flexible dicarboxylate pro-ligands (H2L1 and H2L2). Both CPs 1 and 2 were characterized by elemental, FTIR, and powder X-ray diffraction analysis. Their geometry and the structural features were unveiled by single-crystal X-ray diffraction analysis. The underlying topology of the CPs was illustrated by the topological analysis of the H-bonded structure of CP 1, which revealed a 3,4,6-connected trinodal net. On the other hand, topological analysis on the hydrogen-bonded network of CP 2 showed a 2,3,3,4,6,7-connected hexanodal net. The thermal stability of the CPs was investigated by thermogravimetric analysis. CPs 1 and 2 act as heterogeneous catalysts in one-pot tandem deacetalization–Knoevenagel condensation reactions under environmentally mild conditions. CPs 1 exhibits a yield of ca. 91% in a microwave-assisted solvent-free medium, whereas a slightly lower yield was obtained for CP 2 (87%) under the same experimental protocol. The recyclability of catalyst 1 was also assessed. To our knowledge, these are the first Zn(II)-based CPs to be applied as heterogeneous catalysts for the above tandem reactions under environmentally friendly conditions.

scholarly journals Advances in Magnetic Nanoparticles-Supported Palladium Complexes for Coupling Reactions

Molecules ◽  
2018 ◽  
Vol 23 (10) ◽  
pp. 2532 ◽  
Author(s):  
Mahmoud Nasrollahzadeh
Keyword(s):  
Magnetic Nanoparticles ◽  
Heterogeneous Catalysts ◽  
Catalytic Performance ◽  
Palladium Complexes ◽  
Biologically Active ◽  
Coupling Reactions ◽  
Catalytic Application ◽  
Wide Range ◽  
Supported Palladium ◽  
Metal Catalyzed

Carbon‒carbon (C‒C) and carbon‒heteroatom (C‒X) bonds that form via transition-metal-catalyzed processes have been extensively used in the organic synthesis and preparation of natural products and important compounds such as heterocycles, biologically active molecules, and dendrimers. Among the most significant catalysts, magnetic nanoparticles-supported palladium complexes are very effective, versatile, and heterogeneous catalysts for a wide range of C‒C and C‒X coupling reactions due to their reusability, thermal stability, and excellent catalytic performance. In this review, recent advances to develop magnetic nanoparticles supported palladium complexes, including their preparation, characterization, catalytic application, and reusability in the formation of both C‒C and C‒X bonds, by authors such as Sonogashira, Heck, Suzuki‒Miyaura, and Stille, and a few examples concerning N-arylation, S-arylation, and Csp2-P coupling reactions are discussed.

Zur Synthese fluororganischer O-(Trimethylsilyl)-cyanhydrine / Synthesis of Fluoroorganic O-(Trimethylsilyl)Cyanhydrines

1998 ◽  
Vol 53 (3) ◽  
pp. 296-306 ◽  
Author(s):  
Michael Sander ◽  
Wolfgang Sundermeyer
Keyword(s):  
Carboxylic Acid ◽  
Carbonyl Group ◽  
Hydrogen Cyanide ◽  
Enol Form ◽  
Acid Chlorides ◽  
Trimethylsilyl Cyanide ◽  
Sterically Hindered

Abstract Fluororganic and/or sterically hindered cyanohydrines are useful synthetic reagents, not readily available directly from e.g. aldehydes or ketones and hydrogen cyanide. By using trimethylsilyl cyanide (TMSCN), the obtained O-Silyl-cyanohydrines can be applied successfully for the same purpose. Selected examples of the type R1R2C-CN(OSiMe3) 1 -12 are presented which prove the extensive applicability of this reaction [R = (fluoro)alkyl, (fluoro)aryl, anthryl, cyclopropyl, CCl3, CBr3 etc.]. Malodinitrile derivatives RC(CN)2OSiMe3 14 were obtained from carboxylic acid chlorides, α-, β- and 7 -Diketones react with formation of the corresponding linear or cyclic doubly substituted O-Silylcyanohydrines 16, 17, 21, 22. The enol-form of hexafluoroacetylacetone reacts with silylation to give the E-isomer of the silylenol ether 18, the carbonyl group of which forms the O-Silylcyanohydrine 19. With Me2Si(CN)2 both reaction steps occur intramolecular, yielding a 2,6-dioxa-l-sila-3-cyclohexene 20.

ZnII and CdII MOFs based on an amidoisophthalic acid ligand: synthesis, structure and catalytic application in transesterification

RSC Advances ◽  
2016 ◽  
Vol 6 (92) ◽  
pp. 89007-89018 ◽  
Author(s):  
Anirban Karmakar ◽  
Guilherme M. D. M. Rúbio ◽  
M. Fátima C. Guedes da Silva ◽  
Ana P. C. Ribeiro ◽  
Armando J. L. Pombeiro
Keyword(s):  
Heterogeneous Catalysts ◽  
Metal Organic Frameworks ◽  
Transesterification Reaction ◽  
Catalytic Application ◽  
Acid Ligand ◽  
Metal Organic ◽  
Ligand Synthesis

Metal–organic frameworks of Zn(ii) and Cd(ii) act as recyclable heterogeneous catalysts for the transesterification reaction of carboxylate esters.

Oxorhenium(V) complexes with 1H-benzimidazole-2-carboxylic acid – Synthesis, structural characterization and catalytic application in epoxidation reactions

Polyhedron ◽  
2014 ◽  
Vol 69 ◽  
pp. 205-218 ◽  
Author(s):  
B. Machura ◽  
M. Wolff ◽  
E. Benoist ◽  
J.A. Schachner ◽  
N.C. Mösch-Zanetti ◽  
...  
Keyword(s):  
Carboxylic Acid ◽  
Structural Characterization ◽  
Acid Synthesis ◽  
Catalytic Application
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