Citric acid, a green catalyst for the one-pot, multi-component synthesis of highly substituted piperidines

2015 ◽  
Vol 41 (12) ◽  
pp. 9863-9869 ◽  
Author(s):  
Zahra Madanifar ◽  
Malek-Taher Maghsoodlou ◽  
Mehrnoosh Kangani ◽  
Nourallah Hazeri
Keyword(s):  
Citric Acid ◽  
One Pot ◽  
Green Catalyst ◽  
The One

scholarly journals Convenient Approach for the One-Pot, Three-Component Synthesis of 1-(Benzothiazolylamino)Methyl-2- Naphthol Using Citric Acid as a Green Catalyst

2016 ◽  
Vol 24 (2) ◽  
pp. 112-121 ◽  
Author(s):  
Mojtaba Lashkari ◽  
Malek Taher Maghsoodlou ◽  
Mahsa Karima ◽  
Belgais Adrom ◽  
Maryam Fatahpour
Keyword(s):  
Citric Acid ◽  
Isolation Procedure ◽  
Multicomponent Synthesis ◽  
One Pot ◽  
Green Catalyst ◽  
Mild Conditions ◽  
Convenient Approach ◽  
The One ◽  
Naphthol Derivatives

Abstract A straightforward, one-pot multicomponent synthesis of 1-(benzothiazolylamino)methyl-2-naphthol derivatives was achieved by condensation of 2-naphthol, aldehydes, and 2- aminobenzothiazole catalyzed by a small amount of citric acid, which acts as a benign enviermentally catalyst. Mild conditions with excellent yields and a simple isolation procedure are noteworthy advantages of this method.

scholarly journals Gum arabic-OPO3H2 as a new natural-based green catalyst for the one-pot pseudo-four-component synthesis of naphtho[1,2-e][1,3]oxazines

RSC Advances ◽  
2020 ◽  
Vol 10 (66) ◽  
pp. 40508-40513
Author(s):  
Sahar Saadat Hosseinikhah ◽  
Bi Bi Fatemeh Mirjalili ◽  
Naeimeh Salehi ◽  
Abdolahamid Bamoniri
Keyword(s):  
Gum Arabic ◽  
Phosphorus Pentoxide ◽  
One Pot ◽  
Green Catalyst ◽  
The One

Gum arabic-OPO3H2 (GA-OPO3H2) as a unique natural-based green catalyst was synthesized by the reaction of phosphorus pentoxide with gum arabic.

Fulvic Acid: An Efficient and Green Catalyst for the One-pot Four-component Domino Synthesis of Benzo[a]phenazine Annulated Heterocycles in Aqueous Medium

2020 ◽  
Vol 52 (1) ◽  
pp. 48-55 ◽  
Author(s):  
Afshin Yazdani-Elah-Abadi ◽  
Maliheh Razeghi ◽  
Nasim Shams ◽  
Mehrnoush Kangani ◽  
Razieh Mohebat
Keyword(s):  
Fulvic Acid ◽  
Aqueous Medium ◽  
One Pot ◽  
Green Catalyst ◽  
The One

Glutamic Acid as an Efficient and Green Catalyst for the One-Pot Synthesis of 1,2,4,5-Tetrasubstituted Imidazoles under Thermal, Solvent-Free Conditions

2017 ◽  
Vol 41 (11) ◽  
pp. 673-675 ◽  
Author(s):  
Fahimeh Khazaee Feizabad ◽  
Khatereh Khandan-Barani ◽  
Alireza Hassanabadi
Keyword(s):  
Glutamic Acid ◽  
Reaction Times ◽  
Catalytic Amount ◽  
Solvent Free ◽  
One Pot ◽  
Green Catalyst ◽  
Aryl Aldehydes ◽  
Solvent Free Conditions ◽  
The One ◽  
Tetrasubstituted Imidazoles

A high-yielding synthesis of 1,2,4,5-tetrasubstituted imidazoles is described, involving the reaction of 1,2-dicarbonyl compounds, aryl aldehydes, amines and ammonium acetate in the presence of a catalytic amount of glutamic acid under thermal, solvent-free conditions. The salient features of this protocol are aerobic conditions, a non-hazardous green catalyst, short reaction times and mild reaction conditions.

scholarly journals Synthesis of pyrrolidinone derivatives from aniline, an aldehyde and diethyl acetylenedicarboxylate in an ethanolic citric acid solution under ultrasound irradiation

2016 ◽  
Vol 18 (12) ◽  
pp. 3582-3593 ◽  
Author(s):  
Hamideh Ahankar ◽  
Ali Ramazani ◽  
Katarzyna Ślepokura ◽  
Tadeusz Lis ◽  
Sang Woo Joo
Keyword(s):  
Citric Acid ◽  
Acid Solution ◽  
Ultrasound Irradiation ◽  
Citric Acid Solution ◽  
Sonochemical Synthesis ◽  
One Pot ◽  
Efficient Route ◽  
The One

In this study, we reported a simple and efficient route for the one-pot sonochemical synthesis of substituted 3-pyrrolin-2-ones by citric acid as an additive.

Silica Nanoparticles from Rice Husk Ash: A Green Catalyst for the One-Pot Three-Component Synthesis of Benzo[B]Furan Derivatives

2014 ◽  
Vol 875-877 ◽  
pp. 202-207 ◽  
Author(s):  
Ali Ramazani ◽  
Morteza Rouhani ◽  
Sang Woo Joo
Keyword(s):  
Silica Nanoparticles ◽  
Rice Husk ◽  
Room Temperature ◽  
Rice Husk Ash ◽  
One Pot ◽  
Furan Derivatives ◽  
Green Catalyst ◽  
Iminium Ion ◽  
The One ◽  
High Yields

Reaction of an isocyanide with an iminium ion intermediate, formed by reaction between an electronpoor 2-hydroxybenzaldehyde derivative and a secondary amine in the presence of silica nanoparticles proceeds smoothly at room temperature to afford benzo [b] furan derivatives in high yields.

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