An Efficient One-Pot, Four-Component Synthesis of Pyrazolo[3,4-b]pyridines Catalyzed by Tetrapropylammonium Bromide (TPAB) in Water

2018 ◽  
Vol 71 (6) ◽  
pp. 435 ◽  
Author(s):  
Mahnaz Ezzati ◽  
Jabbar Khalafy ◽  
Ahmad Poursattar Marjani ◽  
Rolf H. Prager
Keyword(s):  
Environmentally Friendly ◽  
One Pot ◽  
Tetrapropylammonium Bromide

A novel and one-pot pseudo-four-component reaction between a series of arylglyoxals, malononitrile, 3-methyl-1-phenyl-1H-pyrazol-5-amine, and acetone in the presence of tetrapropylammonium bromide (TPAB) has been developed to synthesize a series of new substituted pyrazolo[3,4-b]pyridines, using water as an environmentally friendly solvent, in high to excellent yields.

scholarly journals Aqueous one-pot synthesis of well-defined zwitterionic diblock copolymers by RAFT polymerization: an efficient and environmentally-friendly route to a useful dispersant for aqueous pigments

2021 ◽  
Vol 23 (3) ◽  
pp. 1248-1258
Author(s):  
Shannon M. North ◽  
Steven P. Armes
Keyword(s):  
Iron Oxide ◽  
Diblock Copolymers ◽  
Raft Polymerization ◽  
Environmentally Friendly ◽  
Iron Oxide Particles ◽  
One Pot ◽  
One Pot Synthesis ◽  
Highly Effective ◽  
Oxide Particles

An atom-efficient, wholly aqueous one-pot synthesis of zwitterionic diblock copolymers has been devised. Such copolymers can serve as highly effective aqueous dispersants for nano-sized transparent yellow iron oxide particles.

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 ZnO Nanoparticles: A Highly Effective and Readily Recyclable Catalyst for the One-Pot Synthesis of 1,8-dioxo-decahydroacridine and 1,8-dioxooctahydro-xanthene Derivatives

2017 ◽  
Vol 57 (1) ◽  
Author(s):  
Javad Safaei-Ghomi ◽  
Mohammad Ali Ghasemzadeh ◽  
Safura Zahedi
Keyword(s):  
Zno Nanoparticles ◽  
Environmentally Friendly ◽  
Recyclable Catalyst ◽  
Solvent Free ◽  
One Pot ◽  
One Pot Synthesis ◽  
Solvent Free Conditions ◽  
Xanthene Derivatives ◽  
Highly Effective ◽  
The One

ZnO nanoparticles as a worthwhile and recyclable catalyst have been used for the one-pot synthesis of 1,8-dioxo-decahydroacridines and 1,8-dioxooctahydro-xanthenes via multi-component reactions under solvent-free conditions. The presented method is mild, environmentally friendly, inexpensive and highly effective to give the products in good to excellent yields.

CuI-Promoted [3+2] Cycloaddition/oxidation to construct Pyrrolo[2,1a]isoquinolino-quinones from naphthoquinone and tetrahydroisoquinoline

Synlett ◽  
2022 ◽  
Author(s):  
Zihua Yu ◽  
Xue Tang ◽  
Chenxi Huang ◽  
Yehan Shang ◽  
Yu-Jin Li ◽  
...  
Keyword(s):  
Raw Materials ◽  
Environmentally Friendly ◽  
One Pot

The copper-catalyzed three-component one-pot 1,3-dipole cycloaddition/oxidation has been developed to construct Pyrrolo[2,1-a]isoquinolinoquinone derivatives with environmentally friendly oxygen as the oxidant. The products Pyrrolo[2,1-a]isoquinolinoquinones were obtained from the naturally available raw materials tetrahydroisoquinoline, 1,4-naphthoquinone and benzaldehyde with medium yields.

Base-Promoted Three-Component One-Pot Synthesis of 3- (Thiomethyl)indoles with Paraformaldehyde under Aqueous Conditions

Synlett ◽  
2018 ◽  
Vol 29 (20) ◽  
pp. 2693-2696 ◽  
Author(s):  
Fuhong Xiao ◽  
Guo-Jun Deng ◽  
Shanshan Yuan ◽  
Huawen Huang
Keyword(s):  
Carbon Source ◽  
Environmentally Friendly ◽  
Green Solvent ◽  
One Pot ◽  
One Pot Synthesis ◽  
Low Toxicity ◽  
Aqueous Conditions

An ethylenediamine-promoted three-component synthesis of 3-(thiomethyl)indoles from indoles, thiophenols, and paraformaldehyde has been developed. Water is used as the green solvent in a simple and environmentally friendly procedure. Stable and low-toxicity paraformaldehyde is used as a carbon source.

scholarly journals Environmentally Friendly and Regioselective One-Pot Synthesis of Imines and Oxazolidines Serinol Derivatives and Their Use for Rubber Cross-Linking

2020 ◽  
Vol 8 (25) ◽  
pp. 9356-9366
Author(s):  
Vincenzina Barbera ◽  
Gabriella Leonardi ◽  
Antonio Marco Valerio ◽  
Lucia Rubino ◽  
Shuquan Sun ◽  
...  
Keyword(s):  
Environmentally Friendly ◽  
Cross Linking ◽  
One Pot ◽  
One Pot Synthesis

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.

scholarly journals Nano-Fe3O4@walnut shell/Cu(ii) as a highly effective environmentally friendly catalyst for the one-pot pseudo three-component synthesis of 1,3-oxazine derivatives under solvent-free conditions

RSC Advances ◽  
2020 ◽  
Vol 10 (53) ◽  
pp. 31874-31880
Author(s):  
Arefeh Dehghani Tafti ◽  
Bi Bi Fatemeh Mirjalili
Keyword(s):  
Alkaline Medium ◽  
Environmentally Friendly ◽  
Solvent Free ◽  
Walnut Shell ◽  
One Pot ◽  
Nano Catalyst ◽  
Solvent Free Conditions ◽  
Highly Effective ◽  
Nano Fe3o4 ◽  
The One

Fe3O4@walnut shell/Cu(ii) as an eco-friendly bio-based magnetic nano-catalyst was prepared by adding CuCl2 to Fe3O4@walnut shell in alkaline medium.

scholarly journals Supported Ruthenium and Tetrapropylammonium Bromide Catalysts for Oxidative Carboxylation of 1-Decene

2020 ◽  
Vol 32 (4) ◽  
pp. 771-775
Author(s):  
Raiedhah A. Alsaiari
Keyword(s):  
Carbon Dioxide ◽  
Cyclic Carbonate ◽  
Ruthenium Catalysts ◽  
Ruthenium Catalyst ◽  
One Pot ◽  
Radical Initiator ◽  
Tetrapropylammonium Bromide ◽  
Catalytic Quantity ◽  
The One ◽  
Immobilization Method

Cyclic carbonate compounds are valuable for a range of applications and can be synthesized by a one-pot reaction involving epoxidation of olefin followed by reaction of the epoxide with CO2. This study used supported ruthenium catalysts for the epoxidation step (first step), where a combination of tetrapropylammonium bromide and zinc bromide was used for the cycloaddition of carbon dioxide. The supported ruthenium catalyst, prepared by a sol-immobilization method, allowed the effective epoxidation of 1-decene in air (using oxygen as the main oxidant) at 90 ºC in the presence of a catalytic quantity of radical initiator. This approach was applied to the one-pot multi-step oxidative carboxylation of 1-decene in the presence of 1 % Ru/support-Pr4NBr/ZnBr2 catalyst

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