Cyclopentyl methyl ether–NH4X: a novel solvent/catalyst system for low impact acetalization reactions

2015 ◽  
Vol 17 (6) ◽  
pp. 3281-3284 ◽  
Author(s):  
Ugo Azzena ◽  
Massimo Carraro ◽  
Ashenafi Damtew Mamuye ◽  
Irene Murgia ◽  
Luisa Pisano ◽  
...  
Keyword(s):  
Methyl Ether ◽  
Reaction Medium ◽  
Environmentally Friendly ◽  
Catalyst System ◽  
Ammonium Salts

Cyclopentyl methyl ether and ammonium salts provide an environmentally friendly reaction medium for the synthesis of acetals.

scholarly journals One-pot sequential synthesis and antifungal activity of 2-(benzylsulfonyl)benzothiazole derivatives

RSC Advances ◽  
2019 ◽  
Vol 9 (50) ◽  
pp. 29405-29413
Author(s):  
María Sol Ballari ◽  
Natividad Herrera Cano ◽  
Daniel A. Wunderlin ◽  
Gabriela E. Feresin ◽  
Ana N. Santiago
Keyword(s):  
Antifungal Activity ◽  
Reaction Medium ◽  
Environmentally Friendly ◽  
One Pot ◽  
Benzothiazole Derivatives ◽  
Environmentally Friendly Method

New antifungal agrochemicals, derived from 2-(benzylsulfonyl)benzothiazole were synthesized by an environmentally friendly method, using water as reaction medium.

Aqueous Microemulsions as Efficient and Versatile Media for Transition-Metal-Catalyzed Reactions

2013 ◽  
Vol 66 (4) ◽  
pp. 470 ◽  
Author(s):  
Jason G. Taylor ◽  
Jailton Ferrari
Keyword(s):  
Transition Metal ◽  
Organic Solvents ◽  
Reaction Medium ◽  
Environmentally Friendly ◽  
Organic Reaction ◽  
Oil In Water ◽  
Highly Effective ◽  
Transition Metal Catalyzed ◽  
Catalyzed Reactions ◽  
Metal Catalyzed

The search for efficient and versatile reaction medium to perform transition-metal-catalyzed reactions is a continuous challenge to the synthetic community. Organic solvents have been traditionally employed for this task, nevertheless, new environmentally friendly, safe, and economically viable alternatives are still highly sought after. In this context, herein, we present an overview of some interesting applications of aqueous microemulsions (oil-in-water, O/W) for transition metal catalyzed reactions as an alternative and promising aqueous-organic reaction medium that has been found to be a highly effective tool in overcoming some environmental or practical issues presented by traditional organic solvents.

scholarly journals Ammonium Salts Catalyzed Acetalization Reactions in Green Ethereal Solvents

Catalysts ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1108
Author(s):  
Ugo Azzena ◽  
Massimo Carraro ◽  
Martina Corrias ◽  
Rosella Crisafulli ◽  
Lidia De Luca ◽  
...  
Keyword(s):  
Methyl Ether ◽  
Supported Catalysts ◽  
Ammonium Salts ◽  
Amberlyst 15 ◽  
Montmorillonite K10 ◽  
Toluenesulfonic Acid ◽  
Acidic Catalysts ◽  
Catalytic Supports

Cyclopentyl methyl ether and 2-methyltetrahydrofuran, low impact ethereal solvents forming a positive azeotrope with water, were successfully employed as solvents in the synthesis of a variety of acetals carried out under Dean–Stark conditions in the presence of heterogeneous acidic catalysts. Under these conditions, ammonium salts, either as such or supported on SiO2, performed better or equally well than widely employed homogeneous and heterogeneous acidic catalysts such as p-toluenesulfonic acid, Amberlyst 15®, or Montmorillonite K10. Several examples highlight the advantage of tuning the relative acidities of ammonium salts by appropriately selecting the counterion. Within one of these examples, our protocol clearly outweighs the classic p-toluenesulfonic acid/toluene protocol in terms of chemoselectivity. Silica-supported catalysts were characterized by SEM, TEM, and FTIR spectroscopies, as well as by N2 physisorption. Such a characterization reveals an even distribution of ammonium salts on silica, thus confirming the formation of expected catalytic supports.

ARGET ATRP of acrylonitrile with ionic liquid as reaction medium and FeBr3/isophthalic acid as catalyst system

2011 ◽  
Vol 122 (5) ◽  
pp. 3298-3302 ◽  
Author(s):  
Hou Chen ◽  
Chunhua Wang ◽  
Delong Liu ◽  
Min Wang ◽  
Chunnuan Ji
Keyword(s):  
Ionic Liquid ◽  
Reaction Medium ◽  
Catalyst System ◽  
Isophthalic Acid ◽  
Arget Atrp

Kinetic Study on Stereospecific Polymerization of 1,3-Butadiene Using a Nickel Based Catalyst System in Environmentally Friendly Solvent

2012 ◽  
Vol 51 (34) ◽  
pp. 11066-11071 ◽  
Author(s):  
Archana Singh ◽  
Ankur Chavda ◽  
Subrahmanyam Nandula ◽  
Raksh Vir Jasra ◽  
Madhuchhanda Maiti
Keyword(s):  
Kinetic Study ◽  
Environmentally Friendly ◽  
Catalyst System ◽  
Stereospecific Polymerization

“On water” catalytic enantioselective sulfenylation of deconjugated butyrolactams

2017 ◽  
Vol 15 (33) ◽  
pp. 6921-6925 ◽  
Author(s):  
Soumya Jyoti Singha Roy ◽  
Santanu Mukherjee
Keyword(s):  
Reaction Medium ◽  
Catalyst System ◽  
Cinchona Alkaloids

The first catalytic enantioselective α-sulfenylation of deconjugated butyrolactams has been developed using dimeric cinchona alkaloids as catalysts in water-enriched reaction medium. The applicability of the same catalyst system for enantioselective α-selenylation and formal vinylogous γ-hydroxylation of deconjugated butyrolactam has also been described.

Cyclopentyl methyl ether as a green solvent for reversible-addition fragmentation chain transfer and nitroxide-mediated polymerizations

RSC Advances ◽  
2016 ◽  
Vol 6 (9) ◽  
pp. 7495-7503 ◽  
Author(s):  
Carlos M. R. Abreu ◽  
Pedro Maximiano ◽  
Tamaz Guliashvili ◽  
Julien Nicolas ◽  
Arménio C. Serra ◽  
...  
Keyword(s):  
Vinyl Chloride ◽  
Organic Solvents ◽  
Methyl Ether ◽  
Chain Transfer ◽  
Environmentally Friendly ◽  
Green Solvent ◽  
Reversible Addition

Cyclopentyl methyl ether (CPME) was successfully used as an environmentally friendly alternative to regularly employed organic solvents (e.g., THF, DMSO, DCM and DMF) for the RAFT and NMP polymerizations of vinyl chloride (VC) and styrene (S).

scholarly journals Efficient synthesis of some new antiproliferative N-fused indoles and isoquinolines via 1,3-dipolar cycloaddition reaction in an ionic liquid

2015 ◽  
Vol 39 (4) ◽  
pp. 2657-2668 ◽  
Author(s):  
Tushar R. Sutariya ◽  
Balvantsingh M. Labana ◽  
Narsidas J. Parmar ◽  
Rajni Kant ◽  
Vivek K. Gupta ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Cycloaddition Reaction ◽  
Reaction Medium ◽  
Environmentally Friendly ◽  
Dipolar Cycloaddition ◽  
Efficient Synthesis ◽  
Triethylammonium Acetate

Triethylammonium acetate (TEAA) as a new, recyclable and environmentally friendly reaction medium for the intramolecular[3+2] cycloaddition reaction.

ChemInform Abstract: Cyclopentyl Methyl Ether-NH4X: A Novel Solvent/Catalyst System for Low Impact Acetalization Reactions.

ChemInform ◽  
2015 ◽  
Vol 46 (43) ◽  
pp. no-no
Author(s):  
Ugo Azzena ◽  
Massimo Carraro ◽  
Ashenafi Damtew Mamuye ◽  
Irene Murgia ◽  
Luisa Pisano ◽  
...  
Keyword(s):  
Methyl Ether ◽  
Catalyst System

Polyethylene glycol (PEG-400) promoted as an efficient and recyclable reaction medium for the one-pot eco-friendly synthesis of functionalized isoxazole substituted spirooxindole derivatives

2017 ◽  
Vol 41 (23) ◽  
pp. 14062-14066 ◽  
Author(s):  
Nagi Reddy Modugu ◽  
Praveen Kumar Pittala
Keyword(s):  
Polyethylene Glycol ◽  
Reaction Medium ◽  
Environmentally Friendly ◽  
Quinoline Derivatives ◽  
One Pot ◽  
Peg 400 ◽  
The One

An efficient, inexpensive and environmentally friendly synthesis of novel isoxazole substituted spirooxindole-pyridopyrimidine/indenopyridine/chromenopyridine/naphthyridine/quinoline derivatives has been developed.

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