1928
DOI: 10.1002/jlac.19284650115
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Über Ringneigung beim α‐Dinaphtyl. Zur Stereochemie aromatischer Verbindungen. VII

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Cited by 20 publications
(6 citation statements)
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“…Stanley (523) has observed that, when once resolved, 2,2'-dicarboxy-l, 1 'binaphthyl (LIVa) is quite resistant to racemization. Thus its optical rotation does not change on heating at 175°in dimethylformamide for 8 hr, for 2 hr in boiling tetralin (250), or by heating in alkaline solution (248,357). The 5,5'-dicarboxylic acid (LIVb) has also been resolved (70, 71) through its brucine salt, and its optical stability is considered comparable to that of 1,1bianthryl but much less than that of the 2,2'-dicarboxylic acid (LIVa) or the 2,2'-diamine (LIVe).…”
Section: LIIImentioning
confidence: 99%
“…Stanley (523) has observed that, when once resolved, 2,2'-dicarboxy-l, 1 'binaphthyl (LIVa) is quite resistant to racemization. Thus its optical rotation does not change on heating at 175°in dimethylformamide for 8 hr, for 2 hr in boiling tetralin (250), or by heating in alkaline solution (248,357). The 5,5'-dicarboxylic acid (LIVb) has also been resolved (70, 71) through its brucine salt, and its optical stability is considered comparable to that of 1,1bianthryl but much less than that of the 2,2'-dicarboxylic acid (LIVa) or the 2,2'-diamine (LIVe).…”
Section: LIIImentioning
confidence: 99%
“…Christie and Kenner (15) have resolved compounds of types III and IV. Compounds of type IV have also been resolved by Meisenheimer and Horing (16) and by Kuhn and Albrecht (17). More recently Moyer and Adams (18) have effected the resolution of two compounds of type V.…”
Section: Stereoisomerism Of Diphenyl Compoundsmentioning
confidence: 95%
“…Dasselbe Verhalten zeigen Diphenewe (30) Racemisierung. Die Racemisierung ist eine mono-8 gliedrigen Ring, ohne die optische Aktivitat einzubiiWen (79,80). molekulare Reaktion.…”
Section: Aeymmetrische Umlageruag Erster Und Zweiterunclassified
“…Schwefelsaure einen RingschluI.3 zum inaktiven naphthyl liefert durch zweimaligen RingschluB inaktives 2,4-Dinitro-5-methyl-fluorenon einging. Anthanthron(80), Z,Z-Diamino-l,l'-dinaphthyl, wie oben erwahnt, unter der zotierung und Kuppeln mit ResorcinCOO~f-)Mefffhy/ CaoX No, rx, -M q p Einwirkung von Salzsaure inaktives ..4&b -(+) M o 2 * Naphthocarbazol (79). Zweifache Diaund R-oder H-Saure l a t optisch aktive Azofarbstoffe mit enorm hohem Drehvermogen ([a]io = -3230O in Pyridin) und umgekehrtem Drehungssinn entstehen.…”
unclassified