scholarly journals A Green and Efficient Method for the Preparation of 3,4-Dihydropyrimidin-2(1H)-ones Using Quaternary Ammonium-Treated Clay in Water

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Soheil Sayyahi ◽  
Sedigheh Jahanbakhshi ◽  
Zahra Dehghani
Keyword(s):  
Efficient Method ◽  
Quaternary Ammonium ◽  
Biginelli Reaction ◽  
Environmentally Friendly

A variety of 3,4-dihydropyrimidin-2(1H)-ones derivatives were synthesized via three-component Biginelli reaction. The quaternary ammonium-treated clay-catalyzed process proved to be simple, efficient, and environmentally friendly.

Vegetable oil as a highly effective 100% bio-based alternative solvent for the one-pot multicomponent Biginelli reaction

2021 ◽  
Author(s):  
Pakin Noppawan ◽  
Suwiwat Sangon ◽  
Nontipa Supanchaiyamat ◽  
Andrew J. Hunt
Keyword(s):  
Vegetable Oil ◽  
Palm Oil ◽  
Biginelli Reaction ◽  
Environmentally Friendly ◽  
One Pot ◽  
Highly Effective ◽  
The One ◽  
Biginelli Reactions

Multicomponent one-pot Biginelli reactions have been successfully performed using vegetable oil as bio-based, non-toxic, and environmentally friendly solvents. Palm oil was demonstrated to be a highly effective greener solvent as...

scholarly journals N-acylation of amides through internal nucleophilic catalysis

2020 ◽  
pp. 174751982092575
Author(s):  
Meng Yao ◽  
Xia Chen ◽  
Yuling Lu ◽  
Zhenhua Guan ◽  
Zengwei Luo ◽  
...  
Keyword(s):  
Natural Products ◽  
Efficient Method ◽  
Pyridine Ring ◽  
Environmentally Friendly ◽  
Biologically Active ◽  
Active Materials ◽  
Nucleophilic Catalysis

An efficient method for N-acylation of amides is described using a pyridine ring as the internal nucleophilic catalyst to give imides in moderate to excellent yields. The methodology provides a facile, air insensitive, and environmentally friendly route to form diversified imide scaffolds, which exist widely in natural products and biologically active materials.

Anion Metathesis in Facile Preparation of Olefin Metathesis Catalysts Bearing a Quaternary Ammonium Chloride Tag

Synlett ◽  
2019 ◽  
Vol 30 (17) ◽  
pp. 1981-1987 ◽  
Author(s):  
Michał Patrzałek ◽  
Jakub Piątkowski ◽  
Anna Kajetanowicz ◽  
Karol Grela
Keyword(s):  
Ammonium Chloride ◽  
Efficient Method ◽  
Quaternary Ammonium ◽  
Ruthenium Catalysts ◽  
Metathesis Reaction ◽  
Ru Catalyst ◽  
Ru Complexes ◽  
Facile Preparation ◽  
Metathesis Catalysts ◽  
Quaternary Ammonium Chloride

Easy and efficient method for preparation of all-chloro ruthenium catalysts bearing a quaternary ammonium tag was developed. The key anion metathesis reaction was made with AgCl, and the facile recycling of silver wastes was demonstrated. The developed method transforms more accessible, yet poorly characterised mixed chloro/iodo Ru complexes into valuable all-chloro catalysts, useful in aqueous metathesis. Practical utility of the developed anion metathesis reaction was demonstrated by preparation of a commercial Ru catalyst, StickyCat™, on a 5 gram scale.

Physicochemical properties of a urea/zinc chloride eutectic mixture and its improved effect on the fast and high yield synthesis of indeno[2,1-c]quinolines

2020 ◽  
Vol 44 (19) ◽  
pp. 7987-7997
Author(s):  
Diana Peña-Solórzano ◽  
Vladimir V. Kouznetsov ◽  
Cristian Ochoa-Puentes
Keyword(s):  
Physicochemical Properties ◽  
Efficient Method ◽  
Zinc Chloride ◽  
Acidic Medium ◽  
Eutectic Mixture ◽  
Environmentally Friendly ◽  
High Yield

An environmentally friendly and efficient method for the synthesis of indeno[2,1-c]quinolines is developed using a urea/zinc chloride eutectic mixture as a green mildly acidic medium.

scholarly journals Soft Antimicrobial Agents:  Synthesis and Activity of Labile Environmentally Friendly Long Chain Quaternary Ammonium Compounds

2003 ◽  
Vol 46 (19) ◽  
pp. 4173-4181 ◽  
Author(s):  
Thorsteinn Thorsteinsson ◽  
Már Másson ◽  
Karl G. Kristinsson ◽  
Martha A. Hjálmarsdóttir ◽  
Hilmar Hilmarsson ◽  
...  
Keyword(s):  
Quaternary Ammonium ◽  
Antimicrobial Agents ◽  
Environmentally Friendly ◽  
Quaternary Ammonium Compounds ◽  
Ammonium Compounds ◽  
Long Chain

Enzymatic waterborne polyurethane towards a robust and environmentally friendly anti-biofouling coating

RSC Advances ◽  
2016 ◽  
Vol 6 (38) ◽  
pp. 31698-31704 ◽  
Author(s):  
Kai Liu ◽  
Zhiguo Su ◽  
Shida Miao ◽  
Guanghui Ma ◽  
Songping Zhang
Keyword(s):  
Efficient Method ◽  
Castor Oil ◽  
Environmentally Friendly ◽  
Waterborne Polyurethane

A simple, green, robust and efficient method has been developed for the preparation of an anti-biofouling coating by directly mixing antifouling enzymes with a castor oil-based waterborne polyurethane (WPU) dispersion.

Environmentally friendly and efficient method for the synthesis of the new α , α ′‐diimine ligands with benzimidazole moiety

2020 ◽  
Vol 57 (6) ◽  
pp. 2466-2479
Author(s):  
Vakhid A. Mamedov ◽  
Nataliya A. Zhukova ◽  
Milyausha S. Kadyrova ◽  
Rezeda R. Fazleeva ◽  
Olga B. Bazanova ◽  
...  
Keyword(s):  
Efficient Method ◽  
Environmentally Friendly ◽  
Diimine Ligands

Quaternary Ammonium Ionic Liquid as a Dual Solvent-Catalyst in Biginelli Reaction

2016 ◽  
Vol 13 (7) ◽  
pp. 526-530
Author(s):  
Imane Tebabel ◽  
Taoues Boumoud ◽  
Boudjemaa Boumoud ◽  
Debache Abdelmadjid
Keyword(s):  
Ionic Liquid ◽  
Quaternary Ammonium ◽  
Biginelli Reaction

Electrochemical-mediated fixation of CO2: three-component synthesis of carbamate compounds from CO2, amines and N-alkenylsulfonamides

2021 ◽  
Author(s):  
Ting-Kai Xiong ◽  
Xue-Qi Zhou ◽  
Min Zhang ◽  
Hai-Tao Tang ◽  
Ying-Ming Pan ◽  
...  
Keyword(s):  
Efficient Method ◽  
Environmentally Friendly ◽  
Cascade Reaction

An electrocatalyzed three-component cascade reaction of CO2, amines, and N-alkenylsulfonamides is developed, providing an environmentally friendly and efficient method of synthesizing a series of new carbamate compounds. This reaction meets...

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