scholarly journals Renewable Dimethyl Carbonate for Tertiary Amine Quaternisation: Kinetic Measurements and Process Optimisation

2021 ◽  
Author(s):  
Roel Jacob Thomas Kleijwegt ◽  
Vera C. Henricks ◽  
Wyatt Winkenwerder ◽  
Wim Baan ◽  
John van der Schaaf
Keyword(s):  
Tertiary Amine ◽  
Dimethyl Carbonate ◽  
Quaternary Ammonium Salts ◽  
Alkyl Halides ◽  
Ammonium Salts ◽  
Process Optimisation ◽  
Kinetic Measurements ◽  
Menshutkin Reaction ◽  
Production Processes ◽  
Conventional Production

Quaternary ammonium salts (QAS) are an important part of the increasing surfactant market. Conventional production processes employ toxic alkyl halides in a Menshutkin reaction with a tertiary amine (DMDA). Dimethyl...

Synthesis of polyesters by reaction of carboxylic acid quaternary ammonium salts with alkyl halides or alkyl tosylates

Polymer ◽  
1996 ◽  
Vol 37 (7) ◽  
pp. 1267-1271 ◽  
Author(s):  
Philip Hodge ◽  
Richard O'Dell ◽  
Michael S.K. Lee ◽  
John R. Ebdon
Keyword(s):  
Carboxylic Acid ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salts ◽  
Alkyl Halides ◽  
Ammonium Salts

scholarly journals A Novel and Chemoselective Process ofN-Alkylation of Aromatic Nitrogen Compounds Using Quaternary Ammonium Salts as Starting Material

2017 ◽  
Vol 2017 ◽  
pp. 1-6
Author(s):  
Carlos A. González-González ◽  
Juan Javier Mejía Vega ◽  
Ricardo García Monroy ◽  
Davir González-Calderón ◽  
David Corona-Becerril ◽  
...  
Keyword(s):  
Quaternary Ammonium ◽  
Alkylating Agent ◽  
Quaternary Ammonium Salts ◽  
Alkyl Halides ◽  
Ammonium Salts ◽  
Nitrogen Compounds ◽  
Average Yield ◽  
Tetradecyltrimethylammonium Bromide ◽  
Triethylbenzylammonium Chloride ◽  
Naoh Solution

The process ofN-alkylation of several pyrroles, indoles, and derivative heterocycles is herein described, using quaternary ammonium salts as the source of an alkylating agent. These reactions were carried out on several heterocyclic rings with triethylbenzylammonium chloride or tetradecyltrimethylammonium bromide and an NaOH solution at 50%, leading to a chemoselectiveN-alkylated product and an average yield of 73%. This is an alternative process to the traditional benzylation and methylation ofN-heterocycles with direct handling of alkyl halides.

Strategies for the Synthesis of N-Arylammonium Salts

Synthesis ◽  
2017 ◽  
Vol 49 (16) ◽  
pp. 3535-3545 ◽  
Author(s):  
Charles Diesendruck ◽  
Shlomy Arava
Keyword(s):  
Organic Chemistry ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salts ◽  
Ammonium Salts ◽  
Tertiary Amines ◽  
Pyrylium Salts ◽  
Menshutkin Reaction ◽  
Nucleophilic Aromatic Substitutions ◽  
Ammonium Compounds ◽  
General Method

The N-arylation of tertiary amines to provide sp3 quaternary ammonium salts is a challenge in organic chemistry. To date, no general method for such arylations has been established. Here, we summarize a variety of strategies that have been tested, starting with harsh nucleophilic aromatic substitutions, through to the use of copper catalysis and the application of strong electrophiles, such as phenyl cations and benzynes. The achievements and limitations of each method are summarized, and the challenges yet to be met in the synthesis of charged ammonium compounds are described.1 Introduction2 Alkylation of Anilines: The Menshutkin Reaction3 Arylations3.1 Nucleophilic Aromatic Substitutions by Tertiary Amines3.2 Preparation of N-Arylpyridinum Salts from Zincke and Pyrylium Salts3.3 Arylations Using Phenyl Cations3.4 Copper-Catalyzed Arylation of N-Heteroarenes3.5 Benzynes as Aryl Electrophiles4 Conclusions and Perspective

scholarly journals Technological and ecological aspects of the practical application of quaternary ammonium salts in production of synthetic emulsion rubbers in Russia

2008 ◽  
Vol 2 (2) ◽  
pp. 147-152
Author(s):  
Sergey Nikulin ◽  
◽  
Viacheslav Misin ◽  
Keyword(s):  
Quaternary Ammonium ◽  
Quaternary Ammonium Salts ◽  
Ammonium Salts ◽  
Ecological Effect ◽  
Tetraalkylammonium Salts ◽  
Practical Application ◽  
Technological Parameters ◽  
Production Processes ◽  
Ecological Aspects ◽  
Physical And Chemical

In the review physical and chemical aspects and technological parameters of the rubbers production processes from industrial latex with application of ammonium halogenides, tetraalkylammonium salts, poly-(N,N-dimethyl-2-oxypropyleneammonium) chloride, poly-N,N-dimethyl-N,N-diallylammonium chloride, and his copolymer with SO2 are considered. A significant ecological effect of polymeric flocculants application is shown.

Utility of quercetin for determination of some tertiary amine and quaternary ammonium salts

Talanta ◽  
1996 ◽  
Vol 43 (11) ◽  
pp. 1931-1939 ◽  
Author(s):  
F MOHAMED ◽  
A MOHAMED ◽  
H MOHAMED ◽  
S HUSSEIN
Keyword(s):  
Tertiary Amine ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salts ◽  
Ammonium Salts

Synthesis and stability of 1-aminoalkylphosphonic acid quaternary ammonium salts

2021 ◽  
Author(s):  
Tomasz K. Olszewski ◽  
Anna Brol
Keyword(s):  
Phosphonic Acid ◽  
Quaternary Ammonium ◽  
Alkylating Agent ◽  
Quaternary Ammonium Salts ◽  
Ammonium Salts ◽  
Aminoalkylphosphonic Acid

An effective protocol for quaternization of simple 1-aminoalkylphosphonic acids under basic conditions and using Me2SO4 as convenient alkylating agent is reported. In the course of reaction phosphonic acid quaternary ammonium...

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