- Sulfonation method of aromatic hydrocarbons with low electron cloud density
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The invention discloses a sulfonation method of aromatic hydrocarbons with a low electron cloud density. The sulfonation method comprises following steps: (1) in a solvent, taking metal sulfate as a catalyst, mixing chlorosulfonic acid and an aromatic hydrocarbon substrate according to a mole ratio of 1.2-1.5:1, and carrying out sulfonation reactions for 1 to 5 hours, wherein the aromatic hydrocarbon substrate is aromatic hydrocarbons with a low electron cloud density and the solvent is an inert reagent; and (2) subjecting the reaction product obtained in the step (1) to reduced pressure distillation to remove the solvent, after reduced pressure distillation, pouring residues into ice water, adjusting the pH to 0.9-1.1, filtering, and drying the filter cakes to obtain a sulfonation product. The provided sulfonation method has a high yield and reduces the discharge of waste acids.
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Paragraph 0030; 0031; 0032; 0034
(2018/11/22)
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- Synthesis and antistaphylococcal activity of N-substituted-1H- benzimidazole-sulphonamides
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A series of N-substituted-1H-benzimidazole-5(6)-sulfonamides and 3-(5,6-dichloro-1H-benzimidazol-2-yl)-N-substituted benzensulfonamides were synthesized and evaluated for antibacterial activity against Staphylococcus aureus and methicillin-resistant S. aureus (MRSA). Certain compounds inhibit bacterial growth with low MIC (μg/mL) values. The most active compounds 30, 31, and 32 have the lowest MIC values with 0.39 to 0.19 μg/mL. Among the compounds having sulfonamido moities, 16, 23, and 24 exhibited the strongest antibacterial activity with 1.56 μg/mL MIC values.
- Pueskuellue, M. Orhan,Yildiz, Sulhiye,Goeker, Hakan
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experimental part
p. 31 - 39
(2010/06/19)
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