Palladium-quaternary phosphonium phase transfer catalyst brush assembly as reusable and environmentally benign catalyst for coupling of aryl halides and sodium tetraphenylborate in neat water

2015 ◽  
Vol 29 (10) ◽  
pp. 712-717 ◽  
Author(s):  
Abdol R. Hajipour ◽  
Ghobad Azizi
Keyword(s):  
Phase Transfer ◽  
Aryl Halides ◽  
Phase Transfer Catalyst ◽  
Environmentally Benign ◽  
Sodium Tetraphenylborate ◽  
Neat Water

Environmentally benign nucleophilic substitution reaction of arylalkyl halides in water using CTAB as the inverse phase transfer catalyst

2019 ◽  
Vol 43 (40) ◽  
pp. 16041-16045 ◽  
Author(s):  
Atul K. Godha ◽  
Jayaraman Thiruvengadam ◽  
Viswanadhan Abhilash ◽  
Prajwal Balgi ◽  
A. V. Narayanareddy ◽  
...  
Keyword(s):  
Nucleophilic Substitution ◽  
Substitution Reaction ◽  
Phase Transfer ◽  
Phase Transfer Catalyst ◽  
Regioselective Synthesis ◽  
Environmentally Benign ◽  
Nucleophilic Substitution Reaction ◽  
Active Methylene Compounds ◽  
Active Methylene ◽  
Inverse Phase Transfer Catalyst

An environmentally benign, scalable and highly selective C-arylalkylation of active methylene compounds is developed using CTAB as the inverse phase transfer catalyst. The methodology is also applicable to the regioselective synthesis of N-aralkyl/alkyl 2-pyridones.

A new halide-free efficient reaction-controlled phase-transfer catalyst based on silicotungstate of [(C18H37)2(CH3)2N]3[SiO4H(WO5)3] for olefin epoxidation, oxidation of sulfides and alcohols with hydrogen peroxide

RSC Advances ◽  
2014 ◽  
Vol 4 (61) ◽  
pp. 32054-32062 ◽  
Author(s):  
Baochun Ma ◽  
Wei Zhao ◽  
Fuming Zhang ◽  
Yingshuai Zhang ◽  
Songyun Wu ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Phase Transfer ◽  
Alcohol Oxidation ◽  
Phase Transfer Catalyst ◽  
Environmentally Benign ◽  
Olefin Epoxidation ◽  
Oxidation Of Sulfides ◽  
Highly Efficient

A new environmentally benign and highly efficient reaction-controlled phase-transfer catalyst for olefin epoxidation, sulfide and alcohol oxidation was developed.

Simultaneous immobilization of a matrix containing palladium and phase transfer catalyst on silica nanoparticles: application as a recoverable catalyst for the Heck reaction in neat water

RSC Advances ◽  
2014 ◽  
Vol 4 (40) ◽  
pp. 20704-20708 ◽  
Author(s):  
Abdol R. Hajipour ◽  
Ghobad Azizi
Keyword(s):  
Silica Nanoparticles ◽  
Palladium Catalyst ◽  
Heck Reaction ◽  
Phase Transfer ◽  
Phase Transfer Catalyst ◽  
Phosphonium Salts ◽  
Neat Water ◽  
Recoverable Catalyst ◽  
Reaction In Water ◽  
Simultaneous Immobilization

Simultaneous anchoring of phosphonium salts and palladium catalyst on silica nanoparticles and the application in the Heck reaction in water is described.

scholarly journals Novel Oxidative Desulfurization of a Model Fuel with H2O2 Catalyzed by AlPMo12O40 under Phase Transfer Catalyst-Free Conditions

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Márcio José da Silva ◽  
Lidiane Faria dos Santos
Keyword(s):  
Hydrogen Peroxide ◽  
Phase Transfer ◽  
Oxidative Desulfurization ◽  
Phase Transfer Catalyst ◽  
Environmentally Benign ◽  
Aluminum Salts ◽  
Keggin Heteropolyacids ◽  
Model Fuel ◽  
Catalyzed Reactions ◽  
Short Time

A novel process was developed for oxidative desulfurization (ODS) in the absence of a phase transfer catalyst (PTC) using only Keggin heteropolyacids and their aluminum salts as catalysts. Reactions were performed in biphasic mixtures of isooctane/acetonitrile, with dibenzothiophene (DBT) as a model sulfur compound and hydrogen peroxide as the oxidant. Remarkably, only the AlPMo12O40-catalyzed reactions resulted in complete oxidation of DBT into DBT sulfone, which was totally extracted by acetonitrile, reducing the sulfur content of isooctane from the 1000 ppm to <1 ppm. Ranking of catalyst efficiency is as follows: AlPMo12O40 > H3PMo12O40 > AlPW12O40 > H3PW12O40. The absence of a PTC, acidic organic peroxides, and the use of hydrogen peroxide, an environmentally benign oxidant, make up the positive aspects of AlPMo12O40-catalyzed ODS reactions. In these reactions, high rates of DBT removal (ca. 100%) were achieved within a short time (ca. 2 hours) and under mild reaction conditions.

β-cyclodextrin grafted on lignin as inverse phase transfer catalyst for the oxidation of benzyl alcohol in H2O

Tetrahedron ◽  
2016 ◽  
Vol 72 (14) ◽  
pp. 1773-1781 ◽  
Author(s):  
Zujin Yang ◽  
Xia Zhang ◽  
Xingdong Yao ◽  
Yanxiong Fang ◽  
Hongyan Chen ◽  
...  
Keyword(s):  
Benzyl Alcohol ◽  
Phase Transfer ◽  
Phase Transfer Catalyst ◽  
Oxidation Of Benzyl Alcohol ◽  
Inverse Phase Transfer Catalyst
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