75258-08-1

Upstream product

• 75258-07-0 1,2-diacetamido-4-acetoxybenzene 
• 67694-84-2 N-(2-amino-4-hydroxyphenyl)acetamide 
• 492-99-9 1,2-cyclohexanedionedioxime 
• 27992-37-6 1-hydroxy-2,2-dimethyl-4,5,6,7-tetrahydrobenzimidazoline 3-oxide 
• 66927-19-3 2,2-dimethyl-4,5,6,7-tetrahydro-2H-benzimidazole 1,3-dioxide 
• 2243-69-8 4-acetamido-3-nitrophenyl acetate 

Downstream Products

• 4053-51-4 2-acetylamino-1,4-benzoquinone 

Relevant academic research and scientific papers

PREPARATION AND SOME PROPERTIES OF 2H-IMIDAZOLE 1,3-DIOXIDES, DERIVATIVES OF ALICYCLIC 1,2-DIOXIMES

The corresponding 2H-imidazole 1,3-dioxides were obtained by the reaction of cyclohexanedione and cycloheptanedione 1,2-dioximes with acetone, cyclopentanone, and methyl ethyl ketone.The reactions of these compounds with hydroxylamine hydrochloride, NaBH4, a Grignard reagent, and acetic anhydride in the presence of H2SO4 were studied in the case of 2,2-dimethyl-4,5,6,7-tetrahydro-2H-benzimidazole 1,3-dioxide.Bromination of the latter and 2,2-dimethylcyclohepta-2H-imidazole 1,3-dioxide with N-bromosuccinimide gave the corresponding dibromo derivatives, the bromineatoms in which are replaced by acetoxy and hydroxy groups. 4,7-Dihydroxy-2,2-dimethyl-4,5,6,7-tetrahydro-2H-benzimidazole 1,3-dioxide, which was obtained by oxidation with MnO2, was converted to a quinone, viz., 2,2-dimethyl-4,7-dioxo-4,7-dihydro-2H-benzimidazole 1,3-dioxide.