Comparative material study and synthesis of 4-(4-nitrophenyl)oxazol-2-amine via sonochemical and thermal method
摘要:
The present paper deals with the synthesis of aminooxazole derivatives via thermal and ultrasonic methods using deep eutectic solvent as medium. It was observed that ultrasound-assisted method gave 90% yield in just 8 min as against 3.5 h required to get 69% yield by thermal method. One of the compounds 4-(4-nitrophenyl)-1,3-oxazol-2-amine synthesized by both methods were subjected to material characterization study via XRD, TGA and SEM analysis. It was observed that use of ultrasound not only increased the rate of reaction but also improved the quality of product obtained. The crystallinity of the product from ultrasound method was 21.12% whereas thermal method fetched only 8.33% crystallinity thereby improving crystallinity by almost 60%. In addition, sonochemical synthesis also saved more than 70% energy as depicted by energy calculations. (C) 2012 Elsevier B.V. All rights reserved.
A newclass of amido linked azolyl thiophenes was prepared from the synthetic intermediates azolyl amines and 5‐chlorothiophene‐2‐carbonyl chloride adopting conventional and ultrasonication methodologies. It was observed that the reaction took place in shorter reaction times with higher yields under ultrasonication. The structures of the synthesized compounds were characterized by spectral parameters
A new class of azolyl pyrimidines linked by diamino sulfone moiety was prepared and studied their antimicrobialactivity. Chloro‐substituted and nitro‐substituted thiazolyl pyrimidines (9c and 9e) showed excellent antibacterial activity against Bacillus subtilis, while imidazolyl pyrimidines (10c and 10e) exhibited promising antifungal activity against Aspergillus niger.
Synthesis, antioxidant, and antiviral properties of pyrimidinylsulfamoyl azolyl acetamides
作者:Kuppi Reddy Gari Divya、Donthamsetty V. Sowmya、Suram Durgamma、Vadlamudi Tharanath、Divi Venkataramana Sai Gopal、Malaka Venkateshwarulu Jyothi Kumar、Chippada Appa Rao、Adivireddy Padmaja、Venkatapuram Padmavathi
DOI:10.1007/s00044-017-1956-0
日期:2017.10
A new class of pyrimidinylsulfamoyl azolyl acetamides was prepared from 2-pyrimidinylsulfamoyl acetic acid and 2-aminoazoles. The methoxy substituted pyrimidinylsulfamoyl oxazolyl acetamide (8e) displayed moderate antioxidant activity. The methyl and methoxy substituted pyrimidinylsulfamoyl oxazolyl acetamides (8b, 8e) exhibited antiviral activity on BHK 21 cell lines with IC50 63.5, 44.5 µg/mL, respectively
Synthesis, antimicrobial, and anti-inflammatory activities of acetamido pyrrolyl azoles
作者:Donthamsetty V. Sowmya、Shaik Sharafuddin Basha、Palampalli Uma Maheswari Devi、Yerraguravagari Lavanyalatha、Adivireddy Padmaja、Venkatapuram Padmavathi
DOI:10.1007/s00044-017-1801-5
日期:2017.5
for their antimicrobial and anti-inflammatoryactivities. The nitro substituted acetamido pyrrolyl thiazole (11f) and pyrrolyl imidazole (12f) exhibited promising antibacterial activity against K. pneumoniae. The compound 12f showed good antifungal activity against P. chrysogenum. The methoxy acetamido pyrrolyl oxazole (10c) displayed potential anti-inflammatoryactivity.
new bis(azolylamino)- and bis(azolylmethylamino)quinazolines were prepared from 2,4-dichloroquinazoline and azolyl amines under ultrasonication and tested for their antimicrobialactivity. The chloro-, bromo-, and nitro-substituted bis(thiazolylamino)quinazolines displayed excellent antibacterial activity against Bacillus subtilis whereas unsubstituted, chloro-, bromo-, and nitro-substituted bis(im