1961
DOI: 10.1002/hlca.19610440205
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Über Pyromellitsäure‐ und Cumidinsäure‐Derivate. III. Teil

Abstract: MengeMenge trockene Haut roher Me-Extrakt 320 mg entspr. 10,6% 2,237 g 212 mg entspr. 9,5% 0,483 g 22 mg entspr. 4,6%Der rohe Methanolextrakt wurdc wie Trockensekret weiterbehandelt und gab die in Tab. 1 angegebene Menge Material. ZUSAMMENFASSUNG Die Untersuchung von sieben Trockensekreten und vier Hautextrakten aus insgesamt 8 Krotenarten mit Hilfe der Papierchromatographie wird beschrieben.

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Cited by 5 publications
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“…Chloromethylation of meta-xylene with HCl and paraformaldehyde in the presence of acetic acid afforded 1,5-bis(chloromethyl)-2-4-dimethylbenzene 9 (Scheme 1). 28 A modified procedure from Hopff et al 29 was used to nitrate selectively ortho-to the methyl substituents (to yield 10, see the solid-state structure in the SI, Figure S41) and then oxidize the chloromethyl substituents to carboxylic acids (11). 1 H NMR spectroscopic analysis of the diacid 11 revealed the disappearance of the methylene resonance at δH 4.86 ppm and the appearance of a broad singlet at δH 13.56 ppm corresponding to the carboxylic acid protons (see SI, Figure S21).…”
Section: Synthesismentioning
confidence: 99%
“…Chloromethylation of meta-xylene with HCl and paraformaldehyde in the presence of acetic acid afforded 1,5-bis(chloromethyl)-2-4-dimethylbenzene 9 (Scheme 1). 28 A modified procedure from Hopff et al 29 was used to nitrate selectively ortho-to the methyl substituents (to yield 10, see the solid-state structure in the SI, Figure S41) and then oxidize the chloromethyl substituents to carboxylic acids (11). 1 H NMR spectroscopic analysis of the diacid 11 revealed the disappearance of the methylene resonance at δH 4.86 ppm and the appearance of a broad singlet at δH 13.56 ppm corresponding to the carboxylic acid protons (see SI, Figure S21).…”
Section: Synthesismentioning
confidence: 99%