β-Cyclodextrin conjugated magnetic nanoparticles as a novel magnetic microvessel and phase transfer catalyst: synthesis and applications in nucleophilic substitution reaction of benzyl halides

2012 ◽  
Vol 76 (3-4) ◽  
pp. 363-368 ◽  
Author(s):  
Ali Reza Kiasat ◽  
Simin Nazari
Keyword(s):  
Magnetic Nanoparticles ◽  
Nucleophilic Substitution ◽  
Substitution Reaction ◽  
Phase Transfer ◽  
Phase Transfer Catalyst ◽  
Nucleophilic Substitution Reaction ◽  
Catalyst Synthesis ◽  
Benzyl Halides

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.

Phase Transfer Catalysis Method of Synthesis of Benzyl- and Benzhydryloxyalkoxyalkynes

2003 ◽  
Vol 2003 (3) ◽  
pp. 160-161 ◽  
Author(s):  
A. Matijos̆ka ◽  
O. Eicher-Lorka ◽  
L. Rastenytė
Keyword(s):  
Nucleophilic Substitution ◽  
Substitution Reaction ◽  
Phase Transfer Catalysis ◽  
Phase Transfer ◽  
Phase Transfer Catalyst ◽  
Nucleophilic Substitution Reaction

The synthesis of benzyl- and benzhydryloxyalkoxyalkynes and the determination of the influence of phase transfer catalyst, solvent and temperature on this nucleophilic substitution reaction is reported.

Novel lariat calix[4]-1,3-aza-crowns with two branched chains — The excellent phase transfer catalysts for nucleophilic substitution reaction

2010 ◽  
Vol 88 (7) ◽  
pp. 622-627 ◽  
Author(s):  
Fafu Yang ◽  
Yanhua Wang ◽  
Hongyu Guo ◽  
Jianwei Xie ◽  
Zhiqiang Liu
Keyword(s):  
Nucleophilic Substitution ◽  
Substitution Reaction ◽  
Phase Transfer ◽  
Hard Metal ◽  
Nucleophilic Substitution Reaction ◽  
Phenyl Isothiocyanate ◽  
Phase Transfer Catalysts ◽  
H Nmr ◽  
Branched Chains ◽  
New Compounds

By reacting calix[4]-1,3-diethoxylaminoethyl derivative (2) with phenyl isothiocyanate, novel dendritic calix[4]arene derivative (3) with two different branched chains was synthesized in a yield of 78%. By reacting compound 2 with 1,6-diisocyanatohexane or N,N′-bis(2-chloracetamide)ethylene in a “1 + 1” intermolecular addition mode, novel lariat calix[4]-1,3-aza-crowns (4 and 5, respectively) with two branched ethoxyl chains were prepared in reasonable yields. The composition, structures, and conformations of all new compounds were confirmed by elemental analyses, IR, ESI-MS, 1H NMR, and so forth. The liquid–liquid extraction experiments showed that all new hosts possessed good extraction abilities towards soft and hard metal cations. The liquid membrane transport experiments suggested that they had good transport abilities for K+ and Ag+. The experiments of phase transfer catalysis indicated that they possessed excellent catalytic properties of aromatic nucleophilic substitution reaction and benzyl nucleophilic substitution. The optimum yields of products in catalytic reaction were as high as approximately 100%.

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