M-nitrobenzenesulfonic acid

Allison et al. prepared the catalyst by decomposing nickel formate in a paraffin-paraffin oil mixture in a vacuum of a water-stream pump.45 The nickel catalyst thus prepared was not pyrophoric, not sensitive to air and chloride, and showed excellent catalytic properties in the hydrogenation of aqueous solutions of aromatic nitro compounds such as the sodium salts of m-nitrobenzenesulfonic acid, o-nitrobenzoic acid, and p-nitrophenol at pH 5-6. Sasa prepared an active nickel catalyst for the hydrogenation of phenol by decomposing nickel formate in boiling biphenyl [boiling point (bp) 252°C], diphenyl ether (bp 255°C), or a mixture of them (see eq. 11.12)42... 

Remarks. Ferrous sulfate can be used advantageously instead of salt to precipitate the m-nitrobenzenesulfonic acid. The iron salt is very difficultly soluble in 20 per cent sulfuric acid and can be filtered off directly without further treatment. The reduction is carried out exactly as described above. If benzene is sulfonated with 100 per cent sulfuric acid, and then the benzenesulfonic acid is nitrated at 100°, there are formed, according to the work of Obermiller, besides the meta sulfonic acid, considerable quantities of the ortho and para isomers. The latter can be separated quite easily tluough the magnesium salts, and this affords a method for obtaining the valuable o-aminobenzenesulfonic acid. The preparation of orthanilic acid starting with o-m trochlorobenzene has also been described. ... 

The reduction of m-nitrobenzenesulfonic acid is carried out by the method given for preparing aniline (page 75), except that the iron need not be etched since the free mineral acid in the press cake is sufficient to start the reaction. In an iron or copper reduction beaker of about 2-liter capacity are placed 250 grams of finely pulverized cast iron and 1 liter of water. This mixture is heated to boiling... 

NITROBENZENESULFONIC ACID see NFB500 m-NITROBENZENESULFONIC ACID see NFB500... 

Aldehydes have been formed from alcohols by the use of other oxidizing agents. Dihydroxyacetone has been oxidized with excess cupric acetate to hydroxypyruvic aldehyde in 87% yield. p-Cyanobenzyl alcohol treated at 0° with a chloroform solution of nitrogen tetroxide gives practically pure p-cyanobenzaldehyde (90%). Aromatic alcohols containing nitro groups have been oxidized to the corresponding nitro aldehydes with concentrated nitric acid, e.g., o- and p-nitrobenzaldehydes (80-85%). m-Nitrobenzenesulfonic acid in basic media has been used for the oxidation of substituted benzyl alcohols, most satisfactorily for the water-soluble phenolic benzyl alcohols. Selenium dioxide, or less effectively tellurium dioxide, oxidizes benzyl alcohol slowly to benzaldehyde. ... 

A new synthesis was developed by Y. Kashman et al. for the preparation of the parent pyrido[2,3,4-/c/]acridine skeleton utilizing the Doebner-Miller synthesis. In the first step, 3-aminoacetanilide was reacted with vinyl phenyl ketone in the presence of m-nitrobenzenesulfonic acid sodium salt and acetic acid to afford the corresponding 4-phenylquinolines. The acetamide group was then converted to the corresponding aryl azide, which underwent intramolecular nitrene insertion upon thermolysis to give the desired heterocyclic skeleton. 

Sulfo-mix, a solution of m-nitrobenzenesulfonic acid in sulfuric acid [1, 1118, before Sulfosalicylic acid]. 

Benzenesulfonic acid, 3-nitro-, sodium salt Benzene-sulfonic acid, m-nitro-, sodium salt EINECS 204-857-3 HSDB 5614 Ludigol Ludigol F,60 Nacan m-Nitrobenzenesulfonic acid sodium salt Nitrobenzen-m-sulfonan sodny Nitrol S NSC 9795 Sodium 3-nitrobenzenesulfonate Sodium 3-nitrobenzenesulphon-ate Tiskan. 

Nitrobenzenesulfonic acid, sodium salt m-Nitrobenzenesulfonic acid, sodium salt. See Sodium m-nitrobenzenesulfonate... 

Sodium m-nitrobenzenesulfonate CAS 127-68-4 EINECS/ELINCS 204-857-3 Synonyms 3-Nitrobenzenesulfonic acid, sodium salt m-Nitrobenzenesulfonic acid, sodium salt Sodium 3-nitrobenzenesulfonate Classification Substituted aromatic compd. Empirical C6H4NO5S Na Properties Sol. 27.7% in water (20 C) m.w. 

Photocatalytic Reduction of m-Nitrobenzenesulfonic Acid in the Presence of Formic Acid Under Deaerated Conditions... 

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