Oxathiolane and dithiolane exchange reaction for carbonyl group protection: a new, fast and efficient procedure without solvent under microwave irradiation

2000 ◽  
Vol 2 (5) ◽  
pp. 252-255 ◽  
Author(s):  
Bertrand Pério ◽  
Jack Hamelin
Keyword(s):  
Microwave Irradiation ◽  
Exchange Reaction ◽  
Carbonyl Group ◽  
Efficient Procedure

Solvent free protection of carbonyl group under microwave irradiation

1997 ◽  
Vol 38 (45) ◽  
pp. 7867-7870 ◽  
Author(s):  
Bertrand Pério ◽  
Marie-Joelle Dozias ◽  
Patrick jacquault ◽  
Jack Hamelin
Keyword(s):  
Microwave Irradiation ◽  
Carbonyl Group ◽  
Solvent Free

Preparation and characterization of antibacterial silver loaded montmorillonite under microwave irradiation

2013 ◽  
Vol 20 (1) ◽  
pp. 15-22
Author(s):  
Tian Li ◽  
Yuanyuan Zhang ◽  
Zhiyong Song ◽  
Hongtao Wu ◽  
Shuhao Li
Keyword(s):  
Ion Exchange ◽  
Microwave Irradiation ◽  
Exchange Reaction ◽  
Microwave Power ◽  
Silver Content ◽  
Irradiation Time ◽  
Inhibition Zone ◽  
Ion Exchange Reaction ◽  
The Fourier Transform ◽  
Xrd Patterns

AbstractSilver loaded montmorillonite (Ag-MMT) was prepared by ion exchange reaction under microwave irradiation. The effects of microwave irradiation time, AgNO3 concentration, and microwave power on the silver content of Ag-MMT were investigated using the Volhard method. The time of ion exchange reaction was found to be greatly shortened under microwave irradiation. The most suitable reaction condition was in 0.2 m AgNO3 under 100% microwave power irradiation for 4 min, and the silver content was determined and was found to be 1.23 wt%. The results of the Fourier transform infrared spectrum (FT-IR) and Ag+ release tests confirmed the successful loading of silver and its good slow-release property. The X-ray diffraction (XRD) patterns and ultraviolet-visible (UV-vis) spectra proved the existence of metallic Ag nanoparticles. The Ag-MMT showing a large inhibition zone, high inhibition ratio, and low minimum inhibitory concentration (MIC) value against Staphylococcus aureus ATCC6535 presented a very good antibacterial property.

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.

Microwave-assisted efficient one-pot synthesis of nitriles in dry media

2001 ◽  
Vol 2001 (5) ◽  
pp. 190-191 ◽  
Author(s):  
J.S. Yadav ◽  
B.V. Subba Reddy ◽  
Ch. Madan
Keyword(s):  
Microwave Irradiation ◽  
Hydroxylamine Hydrochloride ◽  
One Pot ◽  
Efficient Procedure ◽  
Microwave Assisted ◽  
One Pot Synthesis

A rapid and efficient procedure is reported for the synthesis of nitriles by condensation of aldehydes with hydroxylamine hydrochloride in the presence of dibutyltin oxide supported on Al2O3 under microwave irradiation

Synthesis of 1,2,4-triazolo[4,3-a][1,8]Naphthyridines using Chloranil under Microwave Irradiation

2005 ◽  
Vol 2005 (8) ◽  
pp. 516-519 ◽  
Author(s):  
Kaleru Mogilaiah ◽  
Janapatla Uma Rani ◽  
Boda Sakram
Keyword(s):  
Microwave Irradiation ◽  
High Purity ◽  
Efficient Procedure ◽  
Highly Efficient ◽  
Aryl Aldehyde

A simple and highly efficient procedure has been described for the synthesis of 1-aryl-4-[p-bromophenyl)-1,2, 4-triazolo[4,3-a][1,8]naphthyridines (8) by the oxidation of the corresponding aryl aldehyde 3-(p-bromophenyl)-1, 8-naphthyridin-2-ylhydrazones (7) with chloranil under microwave irradiation. The products are obtained in good yields and in a state of high purity.

Microwave-assisted synthesis of ortho-substituted diaryl N-(tert-butylsulfinyl)ketimines

RSC Advances ◽  
2015 ◽  
Vol 5 (10) ◽  
pp. 7291-7296 ◽  
Author(s):  
Jianfeng Qin ◽  
Liliang Huang ◽  
Yong Cao ◽  
Zhihua Sun
Keyword(s):  
Microwave Irradiation ◽  
Microwave Assisted Synthesis ◽  
Efficient Procedure ◽  
Microwave Assisted

A simple and efficient procedure for the synthesis of ortho-substituted diarylketimines has been developed under microwave irradiation.

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