نتایج جستجو برای: nitro compounds
تعداد نتایج: 237826 فیلتر نتایج به سال:
A series of five-membered heterocyclic rings were synthesized by the reaction between benzoyl chloride and various chlolro-nitro-benzoyl chlorides and semi carbazide to form (C1- C7) compounds and was tested for their anti-inflammatory activity determined by rat-paw-oedema method. All the synthesis compounds have been characterized by (1)HNMR, IR and Mass spectral data. The compounds were purif...
When chloramphenicol is administered by mouth to normal human subjects, only 5 to 10 per cent of the administered dose is excreted unchanged in the urine, as determined by microbiological assay methods (3, 4). However, with calorimetric methods for aromatic nitro compounds (5), from 75 to 90 per cent of the administered dose is accounted for in 24 hour urinary excretion in man (3). The major po...
BACKGROUND Nitroaromatic and chloronitroaromatic compounds have been a subject of great interest in industry and recently in medical-pharmaceutic field. 2-Chloro-4-nitro/2-chloro-5-nitrobenzoic acids and 4-nitrobenzoic acid are promising new agents for the treatment of main infectious killing diseases in the world: immunodeficiency diseases and tuberculosis. RESULTS New ethanolamine nitro/chl...
Polycyclic aromatic hydrocarbons (PAH) are ubiquitous persistent organic pollutants forming as byproducts in combustion processes. These compounds can become nitrated the environment even more toxic nitro derivatives. Both PAHs and nitro-PAHs accumulate soils which lead to pollution of vast areas arable land. The best means their elimination from is bioremediation that degradation by soil micro...
The effect of flexible tetra-methylene vs. semi-rigid xylylene spacers appended in two quinoline tagged sensors bqbpbn (1) and bqbpxn (2) on the sensing nitro-phenolic compounds metal ions has been demonstrated.
A protocol for the synthesis of α-alkynylnitrones from 1,3-enynes has been developed. The process is triggered by hydromagnesiation with magnesium hydride (MgH2), which prepared in situ through solvothermal treatment iodide (MgI2) sodium (NaH) tetrahydrofuran. Downstream functionalization resulting propargylmagnesium intermediates organo nitro compounds affords α-alkynylnitrones, could be used ...
A new efficient and practical method for the room-temperature reduction of aromatic nitro compounds employing FeSO4. 7H2O, NaBH4, H3PW12O40 system in H2O under mild conditions is reported. The method is simple, inexpensive, easily scaled-up and applicable for the large scale preparation of different substituted anilines.
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