1913
DOI: 10.1002/prac.19130870132
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Über die partielle Reduktion aromatischer Polynitroverbindungen auf elektrochemischem Wege. III

Abstract: Brand u. Eisenmenger: Ob. die part. Reduktion etc. 487 2. Bei sehr groBem Uberschusse von Kohlensaure bleibt stets freier Wasserstoff iibrig (Versuche 1, 2, 3 und 12), und desto weniger , je gr6Ber die anfangliche Eonzentration der Eohlensaure war. 3. Wie durch Nickeloxyd, so wird auch durch reduziertes Nickel die Reduktion der Eohlensaure ganz gleich katalysiert. Kupferoxyd ist in diesem Falle auch ein Katalysator, wirkt aber vie1 schwacher als Nickel. 4. Bei Konzentrationen des Wasserstoffs und der Kohlensii… Show more

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Cited by 13 publications
(9 citation statements)
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“…Brand and Eisenmenger (1916) reported the isolation of 1 as a byproduct, after electrochemical reduction of TNT, and described its structural assignment as tentative. The yield of 1 following this procedure was not reported, but appeared to be very low.…”
Section: Discussionmentioning
confidence: 99%
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“…Brand and Eisenmenger (1916) reported the isolation of 1 as a byproduct, after electrochemical reduction of TNT, and described its structural assignment as tentative. The yield of 1 following this procedure was not reported, but appeared to be very low.…”
Section: Discussionmentioning
confidence: 99%
“…4,4',6,6-Tetranitro-2,2'-azotoluene (5) and 2,2',6,6'Tetranitro-4,4'-azotoluene (6) The electrochemical reduction of TNT, while capable of producing 6 in analytical quality, was tedious and not suited to prepare isomers of 6 (Brand and Eisenmenger, 1916;Sitzmann, 1974). In recognition of this, Sitzmann attempted the preparation of 6 by controlled oxidation of 4 with meta-chloroperbenzoic acid (mCPBA).…”
Section: Discussionmentioning
confidence: 99%
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“…The amount available did not permit of further investigation, but for reasons which will appear later we think it possible that this orange compound is the 2:2':4:4'-tetranitro-6:6'-azoxytoluene (XIV), although it could be the geometrical isomeride of the 4:4'-azoxy compound, since azoxy compounds occur in ci8 and tran forms (Sidgwick, 1942). Unfortunately, the 6:6'-aoxyr compound is not described in the literature and, although Brand & Eisenmenger (1913) have described a compound, m.p. 109°, which they claim to be the 6-hydroxylamine, we were unable to repeat their preparation; all our attempts to prepare these compounds have, so far, failed.…”
Section: No2mentioning
confidence: 99%
“…69 4,6-Dinitroindazole was prepared by diazotization of 2-amino-4,6-dinitrotoluene (a 2,4,6-trinitrotoluene partial reduction product). 70 Along with 4,6-dinitroindazole (according to our data when this methodology is used the final product yield is ~ 50%), 2,4-dinitrotoluene, a diazonium salt reduction product, is attained. A method for the synthesis of 1-aryl(hetaryl)-4,6-dinitro-1Н-indazoles based on 2,4,6-trinitribenzaldehyde hydrazones is described.…”
Section: Synthesis Of Benzannelated Five-membered Heterocycles With Tmentioning
confidence: 99%