scholarly journals Ultrasound Promoted Synthesis of 3-Carboxycoumarins in Aqueous Media

2006 ◽  
Vol 3 (1) ◽  
pp. 1-4 ◽  
Author(s):  
Jian-Long Du ◽  
Li-Jun Li ◽  
Da-Hai Zhang
Keyword(s):  
Aqueous Media ◽  
Ultrasound Irradiation ◽  
Green Procedure

An efficient and green procedure has been developed for synthesis of 3-carboxycoumarins, the reaction can be carried out in water under ultrasound irradiation, avoiding addition of catalyst

Fast and Efficient Green Procedure for the Synthesis of Benzo[5,6]chromene Derivatives and Their Sulfur Analogues in Water by Organocatalyst Potassium Phthalimide-N-oxyl

Synthesis ◽  
2020 ◽  
Vol 52 (11) ◽  
pp. 1707-1718
Author(s):  
Nasser Etivand ◽  
Jabbar Khalafy ◽  
Mohammad G. Dekamin
Keyword(s):  
Aqueous Media ◽  
Thiobarbituric Acid ◽  
Environmentally Benign ◽  
The Novel ◽  
One Pot ◽  
Synthetic Strategy ◽  
Three Component Reaction ◽  
High Yields ◽  
Green Procedure ◽  
Arylglyoxal Monohydrates

A simple, clean, straightforward, and environmentally benign one-pot, three-component reaction of various arylglyoxal monohydrates, β-naphthol, and barbituric acid [pyrimidine-2,4,6(1H,3H,5H)-trione] or thiobarbituric acid in the presence of catalytic amounts potassium phthalimide-N-oxyl (PPINO), as a mild and efficient organocatalyst in aqueous media under reflux conditions is reported. This transformation produced the novel diverse-substituted 12-benzoyl-8,12-dihydro-9H-benzo[5,6]chromeno[2,3-d]pyrimidine-9,11(10H)-diones and their sulfur analogues in 82–93% yield via filtration and without utilization of any chromatography. The high yields of products, very simple operation, easy workup, availability of starting materials, green process, and high atom-economy are the main benefits of this synthetic strategy.

A catalytic and green procedure for Friedlander quinoline synthesis in aqueous media

2007 ◽  
Vol 8 (8) ◽  
pp. 1214-1218 ◽  
Author(s):  
Mohammad Ali Zolfigol ◽  
Peyman Salehi ◽  
Arash Ghaderi ◽  
Morteza Shiri
Keyword(s):  
Aqueous Media ◽  
Green Procedure

Pinacol Coupling Reaction of Aromatic Aldehydes Mediated by Zn in Acid Aqueous Media Under Ultrasound Irradiation

2004 ◽  
Vol 34 (6) ◽  
pp. 993-1000 ◽  
Author(s):  
Jin‐Hui Yang ◽  
Ji‐Tai Li ◽  
Jun‐Ling Zhao ◽  
Tong‐Shuang Li
Keyword(s):  
Aqueous Media ◽  
Coupling Reaction ◽  
Aromatic Aldehydes ◽  
Ultrasound Irradiation ◽  
Pinacol Coupling

An operationally simple green procedure for the synthesis of dihydropyrimido[4,5-d]pyrimidinetriones using CuI nanoparticles as a highly efficient catalyst

2015 ◽  
Vol 70 (3) ◽  
pp. 171-176 ◽  
Author(s):  
Shahrzad Abdolmohammadi ◽  
Maryam Afsharpour
Keyword(s):  
Room Temperature ◽  
Aqueous Media ◽  
Coupling Reaction ◽  
Aromatic Aldehydes ◽  
Significant Loss ◽  
Efficient Catalyst ◽  
Nano Crystalline ◽  
Simple Protocol ◽  
High Yields ◽  
Green Procedure

AbstractA green, efficient and simple protocol was developed for the synthesis of dihydropyrimido[4,5-d]pyrimidinetrione derivatives via a coupling reaction of 6-aminouracils, aromatic aldehydes and urea in aqueous media in the presence of nano-crystalline CuI at room temperature. The products were obtained in high yields. CuI nanoparticles can be recycled three times without significant loss of catalytic activity.

Ultrasound Irradiation Promoted Large-Scale Preparation in Aqueous Media and Antioxidant Activity of Azoles

2009 ◽  
Vol 6 (5) ◽  
pp. 323-326 ◽  
Author(s):  
F. Silva ◽  
M. Galluzzi ◽  
B. Albuquerque ◽  
L. Pizzuti ◽  
V. Gressler ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Large Scale ◽  
Aqueous Media ◽  
Ultrasound Irradiation ◽  
Large Scale Preparation ◽  
Scale Preparation

Green synthesis of five- and six-membered N-heterocycles by ultrasonic irradiation in aqueous media

2021 ◽  
Vol 08 ◽  
Author(s):  
Thais Cristina Mendonça Nogueiraa ◽  
Marcus Vinicius Nora de Souza
Keyword(s):  
Green Chemistry ◽  
Green Synthesis ◽  
Ultrasonic Irradiation ◽  
Heterocyclic Compounds ◽  
Aqueous Media ◽  
Ultrasound Irradiation ◽  
New Drugs ◽  
Environmentally Benign ◽  
Water Conditions ◽  
Synthetic Methodologies

: Five- and six-membered N-heterocyclic compounds play an important role in medicinal chemistry and in the development of new drugs. In this manner, there is a constant demand for the development of novel biologically potent compounds and there is also an increasing pressure to develop alternative and more sustainable synthetic methodologies following the Green Chemistry principles. Thus, the present review aims to compile the latest progress in the use of ultrasound irradiation in water conditions to mediate the synthesis of five- and six-membered N-heterocyclic compounds in an environmentally benign manner.

ChemInform Abstract: A Green Procedure for the Synthesis of 1,8-Dioxodecahydroacridine Derivatives under Microwave Irradiation in Aqueous Media Without Catalyst.

ChemInform ◽  
2010 ◽  
Vol 41 (34) ◽  
pp. no-no
Author(s):  
Zi-Qiang Tang ◽  
Yan Chen ◽  
Chang-Ning Liu ◽  
Ke-Ying Cai ◽  
Shu-Jiang Tu
Keyword(s):  
Microwave Irradiation ◽  
Aqueous Media ◽  
Green Procedure
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