97302-32-4

Upstream product

• 1153-47-5 N-(4-ethoxyphenyl)-4-methylbenzenesulfonamide 
• 885-81-4 N-(4-ethoxy-2-nitrophenyl)acetamide 
• 616-86-4 2-nitro-4-ethoxyaniline 
• 98-59-9 p-toluenesulfonyl chloride 

Downstream Products

• 82366-43-6 2,6-dinitro-4-ethoxyaniline 
• 871891-99-5 toluene-4-sulfonic acid-(4-ethoxy-2,3-dinitro-anilide) 
• 98657-84-2 3-Nitro-1-ethoxy-4--benzol 
• 861518-57-2 toluene-4-sulfonic acid-(4-ethoxy-2,3,6-trinitro-anilide) 
• 50591-22-5 1-methyl-1H-benzo[d]imidazol-5-ol 
• 61679-18-3 4-Methoxy-2-nitro-N-methylaniline 
• 300589-86-0 5-Ethoxy-1-ethyl-2-methyl-1H-benzoimidazole 
• 82612-27-9 1-ethyl-2-methyl-5-hydroxybenzimidazole 
• 90873-75-9 2-Nitro-4-ethoxy-N-ethyl-anilin 
• 97953-31-6 toluene-4-sulfonic acid-(4-ethoxy-N-methyl-2-nitro-anilide) 

Relevant academic research and scientific papers

Direct oxidative nitration of aromatic sulfonamides under mild conditions

A direct nitration of aromatic sulfonamides using sodium nitrite as the nitrating agent has been developed. The reaction shows typically mono-substitution selectivity and can be enlarged to the gram scale with good yield.

BASICITY AND STRUCTURE OF 5-HYDROXYBENZIMIDAZOLES IN NITROMETHANE

Examination of the acid-base properties of 5-hydroxybenzimidazoles has shown them to exist in nitromethane as the 5-hydroxy-tautomers.Substituents in the 2-position have a predominantly inductive effect on the basicity of the 3-nitrogen, rationalized as in other nitrogen heterocycles by the proximity of the substituents to the reaction center. Keywords: 5-hydroxybenzimidazole, its tautomers and derivatives; acid-base properties and the effect thereon of substituents; Taft and inductive constants.