1955
DOI: 10.1002/cber.19550880610
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Reaktionen mit Nitrosodisulfonat, VIII. Mitteil.: ortho‐Benzochinone und Phenazine

Abstract: Teuber, Staiger: Reaktionen mit [ Jahrg. 88 .4n die Bildung von o-Chinonen durch -4utosydation einwertiger Phenole, z. B. von Eserolin, sei erinnert.

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Cited by 120 publications
(19 citation statements)
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“…The compound was purified by silica gel column chromatography (1 inch of basic alumina was added to the top of the silica gel column), eluting with hexane-chloroform, 1:1. The product was obtained as a brown solid (62.2 mg, 20.3%): mp 170–172 °C (lit47 mp 174–175 °C). 1 H NMR (CDCl 3 ) δ 8.22-8.19 (m, 2 H), 7.98 (s, 2 H), 7.81-7.77 (m, 2 H), 2.21 (s, 6 H); 13 C NMR (CDCl 3 ) δ 142.9, 142.8, 141.8, 129.6, 129.4, 127.8, 20.6; EIMS m/z (rel intensity) 208 (M + , 100).…”
Section: Methodsmentioning
confidence: 99%
“…The compound was purified by silica gel column chromatography (1 inch of basic alumina was added to the top of the silica gel column), eluting with hexane-chloroform, 1:1. The product was obtained as a brown solid (62.2 mg, 20.3%): mp 170–172 °C (lit47 mp 174–175 °C). 1 H NMR (CDCl 3 ) δ 8.22-8.19 (m, 2 H), 7.98 (s, 2 H), 7.81-7.77 (m, 2 H), 2.21 (s, 6 H); 13 C NMR (CDCl 3 ) δ 142.9, 142.8, 141.8, 129.6, 129.4, 127.8, 20.6; EIMS m/z (rel intensity) 208 (M + , 100).…”
Section: Methodsmentioning
confidence: 99%
“…The chemicals used were as follows: potassium nitrosodisulfonate (Aldrich, USA), H-Pro-His-CysLys-Arg-Met-OH (Bachem, Switzerland), 1,4-benzoquinone, sodium acetate (Fluka, Switzerland), 4-tbutylcatechol, 4-t-butylphenol, sodium dihydrogen phosphate monohydrate (Acros Organics, Belgium), disodium hydrogen phosphate dihydrate, hydroquinone, trifluoroacetic acid (Merck, Germany), acetonitrile (Lab-Scan, Ireland), ascorbic acid (local pharmaceutical company), and 4-t-butyl-1,2-benzoquinone were synthesized according to a method described by Teuber and Staiger [9].…”
Section: Chemicalsmentioning
confidence: 99%
“…AVIonounzZ I I c u n d Diurail Ilf: Man liess 2.5 g (10 mMol) I uncl 3,7 g (40 mMol) Anilin in 15 nil L\thanol und 6 ml Eisessig wahrend 30 Min. unter Ruckfluss reagieren.…”
Section: H) Und Ein Breit Aufgespaltencsunclassified
“…Wir erhielten das 1,3) (I) durch Kondensation von Diathyladipat mit Diathyloxalat in Gegenwart von Natriumathyiat. Das Dion scheidet sicli dabei als gelbes, schwerlosliches Natriumenolat ab, was man zweclcmassig zur Trennung von dem durch Selbstkondensation von Diathyladipat gebildeten 2-Athoxycarbonyl-cyclopentanon und anderen Nebenprodukten beniitzt.…”
unclassified