scholarly journals Versatile precursor dependent copper sulfide nanoparticles as multifunctional catalyst for photocatalytic removal of water pollutants and synthesis of aromatic aldehydes and NH-triazoles

2021 ◽  
Author(s):  
Soniya Agarwal ◽  
Parmita Phukan ◽  
Diganta Sarma ◽  
Kalyanjyoti Deori
Keyword(s):  
Copper Sulfide ◽  
Aromatic Aldehydes ◽  
Water Pollutants ◽  
Photocatalytic Removal ◽  
Multifunctional Catalyst ◽  
First Time

A series of copper sulfide (CS) nanoparticles (NPs) were synthesized just by varying the amount of sulfur precursor and have been explored for the first time as a three way...

Pt NPs@GO as a highly efficient and reusable catalyst for one-pot synthesis of acridinedione derivatives

RSC Advances ◽  
2015 ◽  
Vol 5 (61) ◽  
pp. 49295-49300 ◽  
Author(s):  
Handan Pamuk ◽  
Burak Aday ◽  
Fatih Şen ◽  
Muharrem Kaya
Keyword(s):  
Aromatic Aldehydes ◽  
Reusable Catalyst ◽  
One Pot ◽  
Highly Efficient ◽  
One Pot Synthesis ◽  
First Time

Pt NPs@GO has been used for the first time for synthesizing acridinedione from dimedone, aromatic aldehydes and various amines as a catalyst.

scholarly journals A practical way to synthesize chiral fluoro-containing polyhydro-2H-chromenes from monoterpenoids

2016 ◽  
Vol 12 ◽  
pp. 648-653 ◽  
Author(s):  
Oksana S Mikhalchenko ◽  
Dina V Korchagina ◽  
Konstantin P Volcho ◽  
Nariman F Salakhutdinov
Keyword(s):  
Aromatic Aldehydes ◽  
Single Step ◽  
Preparative Synthesis ◽  
Aliphatic Aldehydes ◽  
First Time

Conditions enabling the single-step preparative synthesis of chiral 4-fluoropolyhydro-2H-chromenes in good yields through a reaction between monoterpenoid alcohols with para-menthane skeleton and aldehydes were developed for the first time. The BF3·Et2O/H2O system is used both as a catalyst and as a fluorine source. The reaction can involve aliphatic aldehydes as well as aromatic aldehydes containing various acceptor and donor substituents. 4-Hydroxyhexahydro-2H-chromenes were demonstrated to be capable of converting to 4-fluorohexahydro-2H-chromenes under the developed conditions, the reaction occurs with inversion of configuration.

scholarly journals An efficient Nb-modified BiVO4 film for photo-induced bacterial inactivation and photocatalytic removal of organic pollutants

2018 ◽  
Vol 42 (8) ◽  
pp. 5664-5667
Author(s):  
Olivier Monfort ◽  
Ewa Dworniczek ◽  
Leonid Satrapinskyy ◽  
Alicja Seniuk ◽  
Daniela Nyblova ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Organic Pollutants ◽  
Bacterial Inactivation ◽  
Methicillin Resistant ◽  
Photocatalytic Removal ◽  
First Time

For the first time, Methicillin-resistant Staphylococcus aureus (MRSA) was inactivated using a Nb-modified BiVO4 photocatalyst.

Nanosized Carbonate-Doped TiO2–x Mesocrystals for Visible-Light-Driven Photocatalytic Removal of Water Pollutants

2020 ◽  
Vol 3 (5) ◽  
pp. 4197-4208
Author(s):  
Shengxin Cao ◽  
Meiqi Du ◽  
Yongjun Li ◽  
Xiaozhou Ye ◽  
Yun Wang ◽  
...  
Keyword(s):  
Visible Light ◽  
Doped Tio2 ◽  
Water Pollutants ◽  
Photocatalytic Removal ◽  
Visible Light Driven

scholarly journals Synthesis of Bis-2,3-dihydroquinazolin-4(1H)-ones and 2,3-Dihydroquinazolin-4(1H)-ones Derivatives with the Aid of Silica-Supported Preyssler Nanoparticles

2013 ◽  
Vol 2013 ◽  
pp. 1-14 ◽  
Author(s):  
Ali Gharib ◽  
Bibi Robabeh Hashemipour Khorasani ◽  
Manouchehr Jahangir ◽  
Mina Roshani ◽  
Reza Safaee
Keyword(s):  
Primary Amine ◽  
Ammonium Carbonate ◽  
Aromatic Aldehydes ◽  
Product Yield ◽  
Primary Amines ◽  
Isatoic Anhydride ◽  
One Pot ◽  
High Yields ◽  
First Time

One-pot three-component condensation of isatoic anhydride with primary amines or ammonium carbonate and aromatic aldehydes in refluxing ethanol in the presence of catalytic amounts of silica-supported preyssler nanoparticles (SPNP) afforded the corresponding 2,3-dihydroquinazolin-4(1H)-ones in high yields, and bis-dihydroquinazolinones were synthesized for the first time by a novel pseudo-five-component condensation of isatoic anhydride, a primary amine, and a dialdehyde in water. The catalyst is reusable and can be applied several times without any decrease in product yield.

Controllable synthesis of Bi4O5Br2 ultrathin nanosheets for photocatalytic removal of ciprofloxacin and mechanism insight

2015 ◽  
Vol 3 (29) ◽  
pp. 15108-15118 ◽  
Author(s):  
Jun Di ◽  
Jiexiang Xia ◽  
Mengxia Ji ◽  
Sheng Yin ◽  
Hongping Li ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Ionic Liquids ◽  
Solvothermal Method ◽  
Ph Control ◽  
Energy Band Structure ◽  
Controllable Synthesis ◽  
Ultrathin Nanosheets ◽  
Photocatalytic Removal ◽  
First Time ◽  
Variable Energy

A novel Bi4O5Br2 ultrathin nanosheets material with 8 nm thickness was prepared via a reactable ionic liquids-assisted solvothermal method accompanied with facile pH control for the first time. The variable energy band structure of Bi4O5Br2 was responsible for the enhanced photocatalytic activity.

DMAP-catalyzed Efficient and Convenient Approach for the Synthesis of 3,3′-(Arylmethylene)bis(2-Hydroxynaphthalene-1,4-Dione) Derivatives

2021 ◽  
Vol 16 (9) ◽  
pp. 1934578X2110458
Author(s):  
Le Nhat Thuy Giang ◽  
Dang Thi Tuyet Anh ◽  
Hoang Thi Phuong ◽  
Nguyen Ha Thanh ◽  
Nguyen Thi Quynh Giang ◽  
...  
Keyword(s):  
Reaction Time ◽  
Microwave Irradiation ◽  
Aromatic Aldehydes ◽  
Environmentally Benign ◽  
Basic Catalyst ◽  
Reaction Conditions ◽  
Efficient Procedure ◽  
Short Reaction Time ◽  
Convenient Approach ◽  
First Time

For the first time the 4-dimethylaminopyridine (DMAP) catalyzed straightforward and efficient procedure has been developed for the synthesis of 3,3′-(arylmethylene) bis(2-hydroxynaphthalene-1,4-dione) derivatives starting from lawsone (2-hydroxy-1,4-naphthoquinone) and a variety of (hetero)aromatic aldehydes in ethanol under microwave irradiation. Three of nine synthesized compounds are new. This method provides notable advantages over existing procedures including use of non-traditional basic catalyst and environmentally benign solvent, mild reaction conditions, excellent yields, short reaction time and simple workup.

Uncatalyzed Synthesis of Unsymmetrical Indole-substituted Methane Derivatives via One-pot Multicomponent Reactions under Solvent-free Conditions

2021 ◽  
Vol 18 ◽  
Author(s):  
Shiyin Li ◽  
Xinru Lin ◽  
Xiling Gao ◽  
Wangyu Zeng ◽  
Xiaoyi Wu ◽  
...  
Keyword(s):  
Multicomponent Reactions ◽  
Aromatic Aldehydes ◽  
Solvent Free ◽  
Experimental Results ◽  
Synthetic Method ◽  
One Pot ◽  
Solvent Free Conditions ◽  
First Time

For the first time, one-pot multi-component reactions containing indole, aromatic aldehydes, and dimedone have been achieved in the absence of any catalyst under solvent-free conditions. A class of unsymmetrical indole-substituted methane derivatives and symmetrical diindolylmethanes have been synthesized through this green organic synthetic method. Based on experimental results, a reasonable mechanism for this condensation is emphasized here.

Three-component Reaction of Cycloheptanone, 6-Amino-1,3-Dimethyluracil and Aromatic Aldehydes; X-Ray Structure, and Anti-inflammatory Evaluation of the Products

2008 ◽  
Vol 63 (9) ◽  
pp. 1117-1126 ◽  
Author(s):  
Mohamed I. Hegab ◽  
Nasser A. Hassan ◽  
Farouk M. E. Abdel-Megeid
Keyword(s):  
Schiff Bases ◽  
Aromatic Aldehydes ◽  
X Ray Diffraction ◽  
Nmr Studies ◽  
Reaction Conditions ◽  
X Ray ◽  
Three Component Reaction ◽  
The Given ◽  
First Time ◽  
C Nmr

1,3-Dimethyl-5-aryl-1,6,7,8,9,10-hexahydrocyclohepta[5,6]pyrido[2,3-d]pyrimidine-2,4-diones 4a, b (the linear regioisomers) and the Schiff bases, 6-N-benzylidenamino-1,3-dimethyluracil derivatives 5a, b, were isolated from a three-component reaction of cycloheptanone, 6-amino-1,3- dimethyluracil, and 4-chloro- or 4-bromobenzaldehyde. Surprisingly, 1,3-dimethyl-10-aryl-1,5,6,7, 8,9-hexahydrocyclohepta[4,5]pyrido-[2,3-d]pyrimidine-2,4-diones 6f, g (the angular regioisomers which are described for the first time in the literature under the given reaction conditions) and the Schiff bases, 6-N-benzylidenamino-1,3-dimethyluracil derivatives 5f, g, were isolated and characterized from the reaction with 4-methoxybenzaldehyde and 4-cyanobenzaldehyde. However, the three-component reaction of 6-amino-1,3-dimethyluracil, cycloheptanone, and 2-methoxybenzaldehyde afforded 1,3-dimethylbenzo[4,5]pyrido[3,2-d]pyrimidine-3,4-dione (7). Single crystal X-ray diffraction and 13C NMR studies of 4a and 6f provided support for the established structures. Some of the new products were tested for antiinflammatory activity comparable to indomethacin.

Metal-free oxidative decarbonylative coupling of aromatic aldehydes with arenes: direct access to biaryls

2015 ◽  
Vol 51 (27) ◽  
pp. 5925-5928 ◽  
Author(s):  
Ren-Jin Tang ◽  
Qing He ◽  
Luo Yang
Keyword(s):  
Aromatic Aldehydes ◽  
Direct Access ◽  
Metal Free ◽  
First Time ◽  
Biaryl Compounds

A metal-free oxidative decarbonylative coupling of aromatic aldehydes with electron-rich or electron-deficient arenes to produce biaryl compounds was developed for the first time.

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