Study on Synthesis and Antibacterial Efficacy of Chloro-Substituted 1,3-Thiazines | Chapter 10 | Recent Trends in Chemical and Material Sciences Vol. 2

 Thiazines are valuable units in medicinal and pharmaceutical chemistry, with a wide range of biological activity described. This prompted us to use thiourea, phenyl thiourea, and diphenyl thiourea to make chloro-substituted thiazines from 2'-hydroxy-3',5'-dichloro-4-4'-chlorophenyl chalcone. In this series, we made 4-(2'-hydroxy-3',5'-dichlorophenyl)-6- (4'-chlorophenyl)-4'-chlorophenyl)-4'-chlorophenyl)-4'-chlorophenyl)-4'-chlorophenyl)-4'-chlorophenyl)-4 4-(2'-hydroxy-3',5'-dichlorophenyl)-6-(4'-chlorophenyl)-2-imino-1,3-thiazine and 4-(2'-hydroxy-3',5'-dichlorophenyl)-4-(4'-chlorophenyl)-4-(4'-chlorophenyl)-4-(4'-chlorophen 4-(2'-hydroxy-3',5'-dichlorophenyl)-2-iminophenyl-1,3-thiazine and 4-(2'-hydroxy-3',5'-dichlorophenyl)-2-iminophenyl-1,3-thiazine from thiourea and phenyl thiourea, respectively. -6-(4'-chlorophenyl) Diphenyl thioure is converted to -2-iminophenyl-3-phenyl-1,3-thiazine. The antibacterial properties of newly synthesised chloro-substituted 1,3-thiazines were tested against Gram positive pathogens Staphylococcus aureus and Streptococcus sp., as well as Gram negative pathogens Pseudomonas sp. and Salmonella typhi. The UV, IR, and NMR spectrum investigations of all of these substances were used to describe them.

Author (S) Details

A. V. Gajbhiye
Department of Chemistry, MGV's A.S.C. College, Nampur-423 204, India.

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Determining the Removal, Recovery, and Recycles of Au(III) from Aqueous Au(III) Solution Using Immobilized Pseudomonas Cells by Biomineralization and Thiourea Oxidation | Chapter 4 | Current Advances in Chemistry and Biochemistry Vol. 9

 Some researchers have recently looked into gold recovery using microbial cells like bacteria, fungi, yeasts, and algae. However, nothing is known about which microbes have a high gold adsorption capacity. Various bacteria, actinomycetes, fungus, and yeast species and strains were tested for their capacity to adsorb gold from a solution containing hydrogen tetrachloroaurate (III). Medical and ceramic materials contain hydrogen tetrachloroaurate (III). The influence of pH, external gold concentration, cell numbers on gold biosorption, and the time course of gold biosorption by Pseudomonas maltophilia cells, which adsorbed substantial amounts of gold from a solution containing hydrogen tetrachloroaurate (III), were all thoroughly investigated. The removal of gold (III) by biosorption and biomineralization from aqueous systems employing microbial cells, gold (III) removal by those using microbial cells, was explored in this chapter in order to approve a much larger amount of gold recovery. The oxidative recovery of gold following reduced gold(0) by oxidation with aqueous thiourea solution, as well as gold reduction-oxidation cycle recycling.

Author (s) Details

Takehiko Tsuruta
Department of Life and Environmental Science, Hachinohe Institute of Technology, Hachinohe, Japan.

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