Synthesis and antimicrobial activity of new Thiazole-2(3H)-thiones containing 1, 1, 3-trisubstituted Cyclobutane

The reaction of potassium salts of RNHCSSK with 2-chloro-1-(3-methyl-3-phenylcyclobutyl)ethan-1-one in ethanol at 78-80°C afforded new 1, 3-thiazole-2(3H)-thiones containing 1, 1, 3-trisubstituted cyclobutane rings at C-4. The antimicrobial activities of these compounds were also investigated against seven different microorganisms, and some of them were found to be active against several of the microorganisms at higher concentrations. (South African Journal of Chemistry: 2003 56: 21-24

Synthesis, Reactivity and Biological Activity of Novel Bisbenzofuran-2-yl-Methanone Derivatives

Preparation of bisbenzofuran-2-yl-methanone (1), the corresponding ketoxime 4, semicarbazone and thiosemicarbazone 3a and 3b, ether derivatives of the ketoximes 5a-j and the alcohol 2 are described. These substances have been prepared in excellent yields. All the synthesized compounds except 5i have been tested against five different microorganisms and some of them were found to be active against some of the species studied

Spectral characterization of a newly synthesized fluorescent semicarbazone derivative and its usage as a selective fiber optic sensor for copper(II)

In this work photoluminescent properties of highly Cu2+ selective organic fluoroionophore, semicarbazone derivative; bis(naphtho[2,1-b]furan-2-yl)methanone semicarbazone (BNF) was investigated in different solvents (dichloromethane, tetrahydrofuran, toluene and ethanol) and in polymer matrices of polyvinylchloride (PVC) and ethyl cellulose (EC) by absorption and emission spectrometry. The BNF derivative displayed enhanced fluorescence emission quantum yield, Q(f) = 6.1 x 10(-2) and molar extinction coefficient, epsilon = 29,000 +/- 65 cm(-1) M-1 in immobilized PVC matrix, compared to 2.6 x 10(-3) and 24,573 115 in ethanol solution

Synthesis and antimicrobial activity of new Thiazole-2(3H)-thiones containing 1, 1, 3-trisubstituted Cyclobutane

The reaction of potassium salts of RNHCSSK with 2-chloro-1-(3-methyl-3-phenylcyclobutyl)ethan-1-one in ethanol at 78-80°C afforded new 1, 3-thiazole-2(3H)-thiones containing 1, 1, 3-trisubstituted cyclobutane rings at C-4. The antimicrobial activities of these compounds were also investigated against seven different microorganisms, and some of them were found to be active against several of the microorganisms at higher concentrations. (South African Journal of Chemistry: 2003 56: 21-24

Characterization of a newly synthesized fluorescent benzofuran derivative and usage as a selective fiber optic sensor for Fe(III)

In this work photoluminescent properties of Fe3+ selective organic fluoroionophore, benzofuran derivative bis(7-methoxybenzofuran-2-il)ketoxime (BFK) was investigated in different solvents (dichloromethane, tetrabydrofuran, toluene and ethanol) and in polymer matrices of polyvinylchloride (PVC) and ethyl cellulose (EC) by absorption and emission spectrometry. The photophysical constants such as quantum yield, Stock's shift and molar extinction coefficient of the BFK dye were declared. The immobilized dye was found to exhibit a selective response for Fe3+ in direction of decrease in fluorescence intensity

Synthesis, Reactivity and Biological Activity of Novel Bisbenzofuran-2-yl-Methanone Derivatives

Preparation of bisbenzofuran-2-yl-methanone (1), the corresponding ketoxime 4, semicarbazone and thiosemicarbazone 3a and 3b, ether derivatives of the ketoximes 5a-j and the alcohol 2 are described. These substances have been prepared in excellent yields. All the synthesized compounds except 5i have been tested against five different microorganisms and some of them were found to be active against some of the species studied