Quaternary ammonium salts as highly efficient and green alkylating agents for N-alkylation of azaheterocycles under microwave irradiation

2008 ◽  
Vol 5 (S1) ◽  
pp. S40-S46 ◽  
Author(s):  
A. Khalafi-Nezhad ◽  
A. Zare ◽  
A. Parhami ◽  
A. Hasaninejad ◽  
A. R. Moosavi Zare
Keyword(s):  
Microwave Irradiation ◽  
Quaternary Ammonium ◽  
Alkylating Agents ◽  
Quaternary Ammonium Salts ◽  
Ammonium Salts ◽  
Highly Efficient

Cinchona alkaloid-based chiral catalysts act as highly efficient multifunctional organocatalysts for the asymmetric conjugate addition of malonates to nitroolefins

2015 ◽  
Vol 13 (40) ◽  
pp. 10216-10225 ◽  
Author(s):  
Veeramanoharan Ashokkumar ◽  
Ayyanar Siva
Keyword(s):  
Michael Addition ◽  
Quaternary Ammonium ◽  
Conjugate Addition ◽  
Quaternary Ammonium Salts ◽  
Cinchona Alkaloid ◽  
Ammonium Salts ◽  
Addition Reactions ◽  
Chiral Catalysts ◽  
Reaction Conditions ◽  
Highly Efficient

New pentaerythritol tetrabromide based chiral quaternary ammonium salts have been prepared and used as organocatalysts for enantioselective Michael addition reactions between various nitroolefins and Michael donors under mild reaction conditions with very good chemical yields and ee's.

scholarly journals Investigations of the generality of quaternary ammonium salts as alkylating agents in direct C–H alkylation reactions: solid alternatives for gaseous olefins

2019 ◽  
Vol 17 (16) ◽  
pp. 4024-4030
Author(s):  
David Schönbauer ◽  
Manuel Spettel ◽  
Robert Pollice ◽  
Ernst Pittenauer ◽  
Michael Schnürch
Keyword(s):  
Quaternary Ammonium ◽  
Alkylating Agents ◽  
Quaternary Ammonium Salts ◽  
Ammonium Salts ◽  
Short Chain ◽  
Alkylation Reactions

C–H alkylation reactions using short chain olefins as alkylating agents could be operationally simplified on the lab scale by using quaternary ammonium salts as precursors for these gaseous reagents.

Thioxanthone acetic acid ammonium salts: highly efficient photobase generators based on photodecarboxylation

RSC Advances ◽  
2015 ◽  
Vol 5 (66) ◽  
pp. 53342-53348 ◽  
Author(s):  
Xiaoqing Dong ◽  
Peng Hu ◽  
Guigang Zhu ◽  
Zhiquan Li ◽  
Ren Liu ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Quaternary Ammonium ◽  
Active Species ◽  
Quaternary Ammonium Salts ◽  
Ammonium Salts ◽  
Highly Efficient ◽  
Photobase Generators

Novel photobase generators, which contain thioxanthone as the chromophore and different quaternary ammonium salts as latent active species, can efficiently catalyze the thiol–epoxy polymerization via photoinduced decarboxylation.

Synthesis and Characterizaion of Adamantane-Containing Quaternary Ammonium Salts

2011 ◽  
Vol 233-235 ◽  
pp. 238-241 ◽  
Author(s):  
Jian Wei Guo ◽  
Nian Yun Guan ◽  
Sa Liu ◽  
Chu Fen Yang ◽  
Le Jie Zhu
Keyword(s):  
Ammonium Salt ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salt ◽  
Alkylating Agents ◽  
Quaternary Ammonium Salts ◽  
Ammonium Salts ◽  
Adamantane Derivatives ◽  
H Nmr ◽  
Potential Use

To develop the potential use of adamantane derivatives in surfactant field, the adamantyl residue was introduced into the quaternary ammonium salt. The method involved synthesizing N-(1-adamantyl)-N, N-dimethylamine from 1-adamantine and quaternizing with different alkylating agents. Eight adamantane-containing quaternary ammonium salts were prepared and their structures were identified by1H NMR and IR.

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