Iodine‐modified Pd catalysts promote the bifunctional catalytic synthesis of 2,5‐hexanedione from C6 furan aldehydes

ChemSusChem ◽  
2021 ◽  
Author(s):  
Zhikun Tong ◽  
Xiang Li ◽  
Jiawei Zhu ◽  
Shixia Chen ◽  
Guiping Dai ◽  
...  
Keyword(s):  
Catalytic Synthesis ◽  
Pd Catalysts

Study on the catalytic synthesis of diethyl carbonate from CO and ethyl nitrite over supported Pd catalysts

2004 ◽  
Vol 5 (12) ◽  
pp. 765-770 ◽  
Author(s):  
Xinbin Ma ◽  
Mingming Fan ◽  
Pingbo Zhang
Keyword(s):  
Catalytic Synthesis ◽  
Diethyl Carbonate ◽  
Pd Catalysts ◽  
Supported Pd Catalysts ◽  
Ethyl Nitrite ◽  
Supported Pd

Catalytic synthesis of methyl acrylate from acetylene, carbon monoxide and methanol under pressure

1963 ◽  
Vol 13 (11) ◽  
pp. 498-505
Author(s):  
S. K. Bhattacharyya ◽  
A. K. Sen
Keyword(s):  
Carbon Monoxide ◽  
Methyl Acrylate ◽  
Catalytic Synthesis ◽  
Acetylene Carbon

Catalytic synthesis of n-butyl acrylate from acetylene, carbon monoxide and n-butanol under high pressure

1966 ◽  
Vol 16 (7) ◽  
pp. 202-205
Author(s):  
S. K. Bhattacharyya ◽  
D. P. Bhattacharyya
Keyword(s):  
Carbon Monoxide ◽  
High Pressure ◽  
Butyl Acrylate ◽  
Catalytic Synthesis ◽  
Acetylene Carbon

Catalytic Synthesis of Cyclic Guanidines via Hydrogen Atom Transfer and Radical-Polar Crossover

2020 ◽  
Author(s):  
Shunya Ohuchi ◽  
Hiroki Koyama ◽  
Hiroki Shigehisa
Keyword(s):  
Hydrogen Atom ◽  
Functional Group ◽  
Hydrogen Atom Transfer ◽  
Catalytic Synthesis ◽  
Membered Ring ◽  
Biologically Active ◽  
Atom Transfer ◽  
Powerful Method ◽  
Protective Groups ◽  
The Common

A catalytic synthesis of cyclic guanidines, which are found in many biologically active compounds and natu-ral products, was developed, wherein transition-metal hydrogen atom transfer and radical-polar crossover were employed. This mild and functional-group tolerant process enabled the cyclization of alkenyl guanidines bearing common protective groups, such as Cbz and Boc. This powerful method not only provided the common 5- and 6-membered rings but also an unusual 7-membered ring. The derivatization of the products afforded various heterocycles. We also investigated the se-lective cyclization of mono-protected or hetero-protected (TFA and Boc) alkenyl guanidines and their further derivatiza-tions.

Synthesis of Phosphonates, Phosphinates and Tertiary Phosphine Oxides by Pd- or Ni-Catalyzed Microwave-Assisted P–C Coupling Reactions without the Addition of Conventional Ligands

2021 ◽  
Vol 25 ◽  
Author(s):  
Réka Henyecz ◽  
György Keglevich
Keyword(s):  
Tautomeric Form ◽  
Catalyst Precursor ◽  
Coupling Reactions ◽  
Optimum Conditions ◽  
Pd Catalysts ◽  
Catalyst Complex ◽  
Two Factors ◽  
Dialkyl Phosphites ◽  
Catalyst Systems ◽  
P Ligands

Abstract: Microwave (MW)-assistance may be a powerful tool also in the Hirao P–C coupling reactions of vinyl/aryl halides with dialkyl phosphites in the presence of Pd-catalysts/P-ligands elaborated forty years ago. This review surveys the development of this reaction by showing the expansion of the reagents and catalysts, as well as the information accumulated. The stress was laid on the “green” aspects, the simplification of the catalyst systems, and the reliable mechanistic details in order to be able to establish the optimum conditions. The best protocol involves the use of some excess of the >P(O)H reagent to ensure the PdII→Pd0 reduction and, via its trivalent tautomeric form (>POH) also the P-ligand. The overall rate is the result of two factors, the activity of the catalyst complex formed, and the reactivity of the reactants in the P–C coupling reactions. Both components are influenced by the nature of the aryl substituents in Ar2P(O)H. NiII salts may also be used as the catalyst precursor, however, despite the PdII→Pd0→PdII route, in this case, a NiII→NiIV→NiII sequence was proved.

Palladium Promoted Copolymerization of Carbon Monoxide with Polar or Nonpolar Olefinic Monomers

2020 ◽  
Vol 24 ◽  
Author(s):  
Yanlin Zong ◽  
Qiankun Li ◽  
Hongliang Mu ◽  
Zhongbao Jian
Keyword(s):  
Carbon Monoxide ◽  
Physical Properties ◽  
Vinyl Monomers ◽  
Pd Catalysts ◽  
Catalytic Systems

Abstract:: The copolymers of carbon monoxide (CO) and olefins, namely polyketones, are a family of widely used materi-als. In the catalytic preparation of these materials, palladium(II) catalysts represent the most successful catalytic systems. The production of both alternating and non-alternating polyketones has been achieved, with great difference in their physical properties. Herein, a variety of palladium(II) catalysts employed for the copolymerization of CO with various olefinic mon-omers such as ethylene, α-olefins, styrene and polar vinyl monomers are fully summarized. The influence of important fac-tors such as solvents and counterions on specific copolymerization, is also discussed. This review aims to enlighten the de-sign of new Pd catalysts with improved properties, as well as the development of new polyketone materials.

Synthesis of 3,4-Dihydropyrimidin-2(1H)-one Derivatives Using Activated Montmorillonite as Catalyst

2018 ◽  
Vol 16 (1) ◽  
pp. 59-65
Author(s):  
Sofiane Mekki ◽  
Lahcen Krabia ◽  
Saleh Mahmoud Saleh Mohamed ◽  
Salima Saidi-Besbes
Keyword(s):  
Catalytic Synthesis ◽  
Montmorillonite Clays

An efficient catalytic synthesis of 4-aryl-3,4-dihydropyrimidine-2(1H)-one derivatives using copper (II), iron (III) and zinc (II) exchanged montmorillonite clays as a catalyst is described. The desired products were obtained in good yields.

Catalytic Synthesis of Bulk Hydrophilic Acetaldehyde-Modified Polyamide 46

2014 ◽  
Vol 11 (2) ◽  
pp. 288-294
Author(s):  
Hamidreza Barghi ◽  
Mikael Skrifvars ◽  
Mohammad Taherzadeh
Keyword(s):  
Catalytic Synthesis
Sign in / Sign up

Export Citation Format

Share Document