10.1081/SCC-120002132
The study focuses on the synthesis of 1-aryl-4,6-dinitro-1H-indazoyl-3-methylcarboxylates, which are derived from 2,4,6-trinitrotoluene (TNT) derivatives. The researchers aimed to modify the 4,6-dinitroindazole structure by introducing a new substituent, leading to the development of a facile method for synthesizing methyl esters of 1-aryl-4,6-dinitro-1H-indazolyl-3-carboxylic acids. Key chemicals used in the study include TNT, which was converted into 2,4,6-trinitrophenylacetic acid, and then into methyl picrylacetate. Diazonium salts were reacted with this ester to form hydrazones, which underwent cyclization to yield the desired indazoles. The purpose of these chemicals was to facilitate the synthesis of new indazole derivatives, which were obtained in good yields and had their structures confirmed through microanalyses and NMR spectra.
10.1021/je60061a002
The study focuses on the preparation of high-purity model compounds resulting from the reduction of 2,4,6-trinitrotoluene (TNT) for comparison with biodegradation products. The researchers aimed to produce 12 reduction products of TNT, including amino, hydroxylamino, azo, and azoxy compounds. They successfully synthesized eight compounds, two of which, 4,4',6,6'-tetranitro-2,2'-azoxytoluene and 2,4'-dimethyl-3,3',5,5'-tetranitro-ONN-azoxybenzene, are newly reported. The study details the preparation methods and improvements made in the purity of these compounds. Key chemicals involved include 2,4,6-trinitrotoluene (TNT) as the starting material, and various reagents such as m-chloroperoxybenzoic acid, ammonium sulfide, and sodium hypochlorite used in the reduction and oxidation processes to produce the desired compounds. The study also discusses the challenges and modifications made to existing methods to achieve high-purity products.
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