1894
DOI: 10.1002/jlac.18942790102
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Ueber die Constitution der Ringsysteme

Abstract: JUSTUS LIEBIG'S ANNALEN DER CHEMIE. Band.Nttheilung aus cEem 11. chemischen Universitatslaboratorium in Berlin.Ueber die Constitution der Ringsysteme ;V Q~ T% LXarckwald. [ Z w e i t e A b h a n d l n n g . ] Eine kurzlich erschienene Abhandlung yon Ad. GI a u s l):,, Ueber die Constitution des Benzols'., beschaftigt sich mit einer unter obigem Titel von mir veroffentlicliten Untersuchung ' ) I) Joum. f. pract. Chem. 48, 576 ff. ") Diese Annalen 274, 331 ff. Auuslen der Chemie 279. Ed. 1 2 M a r c k u' a Id , … Show more

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Cited by 23 publications
(3 citation statements)
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“…The paper of Marckwald (1894) may be considered as the first publication in the chemical literature which is concerned with the Kekule structures of a benzenoid hydrocarbon and their enumeration. The paper of Marckwald (1894) may be considered as the first publication in the chemical literature which is concerned with the Kekule structures of a benzenoid hydrocarbon and their enumeration.…”
Section: Historical Remarksmentioning
confidence: 99%
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“…The paper of Marckwald (1894) may be considered as the first publication in the chemical literature which is concerned with the Kekule structures of a benzenoid hydrocarbon and their enumeration. The paper of Marckwald (1894) may be considered as the first publication in the chemical literature which is concerned with the Kekule structures of a benzenoid hydrocarbon and their enumeration.…”
Section: Historical Remarksmentioning
confidence: 99%
“…Although the enumeration of Kekule structures of benzenoid hydrocarbons has a tradition of almost one century (Marckwald 1894 structures of a benzenoid hydrocarbon B will be denoted by K{B} or simply by K.…”
Section: Historical Remarksmentioning
confidence: 99%
“…a. preparation 1. Ring closure (o) Most attempts to prepare the 1,8-naphthyridine ring system from 2aminopyridines have been unsuccessful, because the ring closure takes place through the ring nitrogen. Among these may be mentioned the Skraup (38,40), Doebner-Miller (38,61,62), Knorr (12), and Price-Roberts (54) syntheses (see Section VI, C). Likewise, ethyl malonate and 2-aminopyridine give a 1,4adiazanaphthalene derivative (I) (8), but, with methyl 2-aminonicotinate, ring closure takes place through the carboxyl group and 2,4-dihydroxy-1,8-naphthyridine-3-carboxylic acid methyl ester (II) is obtained (it should be noted that there has also been an ester interchange) (23).…”
Section: 7-naphthyridinementioning
confidence: 99%