Solvent-free reactions as green chemistry procedures for the synthesis of cosmetic fatty esters

2003 ◽  
Vol 5 (5) ◽  
pp. 623 ◽  
Author(s):  
C. Villa ◽  
E. Mariani ◽  
A. Loupy ◽  
C. Grippo ◽  
G. C. Grossi ◽  
...  
Keyword(s):  
Green Chemistry ◽  
Solvent Free ◽  
Fatty Esters

scholarly journals Green-chemistry Compatible Approach to TiO2-supported PdAu Bimetallic Nanoparticles for Solvent-free 1-Phenylethanol Oxidation under Mild Conditions

2015 ◽  
Vol 7 (3) ◽  
pp. 307-315 ◽  
Author(s):  
Jian-Bing Chang ◽  
Chang-Hai Liu ◽  
Jie Liu ◽  
Yu-Yan Zhou ◽  
Xu Gao ◽  
...  
Keyword(s):  
Green Chemistry ◽  
Bimetallic Nanoparticles ◽  
Solvent Free ◽  
Mild Conditions

scholarly journals Barium Dichloride as a Powerful and Inexpensive Catalyst for the Pechmann Condensation without Using Solvent

2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
Saeed Khodabakhshi
Keyword(s):  
Green Chemistry ◽  
Organic Solvents ◽  
Condensation Reaction ◽  
Reaction Times ◽  
Solvent Free ◽  
Coumarin Derivatives ◽  
Inexpensive Method ◽  
Keto Esters ◽  
Pechmann Condensation ◽  
Solvent Free Conditions

Various coumarin derivatives have been efficiently synthesized via barium dichloride-catalyzed Pechmann condensation reaction of various phenols and β-keto esters under solvent-free conditions. This novel and inexpensive method has advantages such as short reaction times, excellent product yields, and avoidance of organic solvents in agreement with green chemistry principles.

Catalyst- and Solvent-Free Hydrophosphorylation of Ketones with Secondary Phosphine Oxides: Green Synthesis of Tertiary α-Hydroxyphosphine Oxides

Synthesis ◽  
2020 ◽  
Vol 52 (15) ◽  
pp. 2224-2232
Author(s):  
Boris A. Trofimov ◽  
Nina K. Gusarova ◽  
Nina I. Ivanova ◽  
Kseniya O. Khrapova ◽  
Pavel A. Volkov ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Green Chemistry ◽  
Green Synthesis ◽  
Quantum Chemical Calculations ◽  
Quantum Chemical ◽  
Solvent Free ◽  
Secondary Phosphine ◽  
Phosphine Oxides ◽  
Intramolecular Hydrogen ◽  
Solvent Free Reaction

Tertiary α-hydroxyphosphine oxides have been synthesized via the catalyst- and solvent-free reaction between available secondary phosphine oxides and aliphatic, aromatic and heteroaromatic ketones at 20–62 °C in near to 96–98% yield. The developed method meets the requirements of green chemistry and the PASE (pot, atom, step economy) paradigm. According to quantum-chemical calculations at the B3LYP/6-311++G(d,p) level, the synthesized hydroxyphosphine oxides feature a weak (≈3 kcal·mol–1) O−H···O=P intramolecular hydrogen bond.

ChemInform Abstract: Green Chemistry Approaches to the Knoevenagel Condensation: Comparison of Ethanol, Water and Solvent-Free (Dry Grind) Approaches.

ChemInform ◽  
2010 ◽  
Vol 33 (33) ◽  
pp. no-no
Author(s):  
Adam McCluskey ◽  
Philip J. Robinson ◽  
Tim Hill ◽  
Janet L. Scott ◽  
J. Kate Edwards
Keyword(s):  
Green Chemistry ◽  
Knoevenagel Condensation ◽  
Solvent Free ◽  
Dry Grind

Applications of Crystal Engineering Strategies in Solvent-free Reactions: Toward a Supramolecular Green Chemistry

2006 ◽  
pp. 1-23 ◽  
Author(s):  
Dario Braga ◽  
Daniela D'Addario ◽  
Lucia Maini ◽  
Marco Polito ◽  
Stefano Giaffreda ◽  
...  
Keyword(s):  
Green Chemistry ◽  
Crystal Engineering ◽  
Solvent Free

scholarly journals SOLVENT-FREE SYNTHESIS OF AMIDE: A NOVEL TECHNIQUE OF GREEN CHEMISTRY

2021 ◽  
pp. 99-102
Author(s):  
CHIRAGKUMAR J GOHIL ◽  
MALLESHAPPA N NOOLVI
Keyword(s):  
Carboxylic Acid ◽  
Green Chemistry ◽  
Good Yield ◽  
Functional Group ◽  
Environmental Issues ◽  
Solvent Free ◽  
Novel Technique ◽  
Rate Of Reaction ◽  
Solvent Free Synthesis ◽  
Very High

Objective: Amide is one of the most important functional group presents in the chemicals, pharmaceuticals, and foods. Conventionally, it has been synthesized from the carboxylic acid and amines. This conventional reaction is lengthy and involves hazardous chemicals and solvents. Hence, it poses waste management, solvent removal, and environmental issues to the industries. To overcome this limitation, we have reported the green chemistry-based method for the synthesis of amide from carboxylic acid and urea. Methods: In this reaction, we have used boric acid as a catalyst, it is a simple and readily available compound. It is simple, efficient, and solvent-free procedure which involves the trituration of the reactant mixture and subsequent, direct heating of the triturated mixture. Results: The rate of reaction is very high and can synthesize the amide quickly. Conclusion: Various amides were prepared in good yield by this technique.

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