1950
DOI: 10.1002/hlca.19500330220
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Zur Kenntnis des Kohlenstoffringes. 54. Mitteilung. Vielgliedrige Cycloalkyl‐amine

Abstract: Neweihy und 0. Hafliger.(1. 11. 50.) Mitteilungl).Um einen weiteren Beitrag zur Kenntnis des Einflusses der Ringgrosse auf chemische Eigenscha,ften der vielgliedrigen Ringverbindungen zu liefern2), stellten wir die Reihe der ringhomologen Cycloalkyl-amine (11) mit 6 bis 18 Ringgliedern her und bestimmten ihre Dissoziationskonstanten in 80-proz. Methylcellosolve. I I1 Die ringhomologen Cycloalkyl-amine, von welchen friiher die Vertreter mit 6 , 7, 8 und 15 Ringgliedern bekannt waxen3), wurden durch Reduktion de… Show more

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Cited by 17 publications
(7 citation statements)
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“…Therefore although conformational restrictions do contribute to the negative DS for n $ 12, we conclude that they are not dominant. We must admit that our original explanation, in terms of the number of conformations available, 19 is wrong.…”
Section: Discussionmentioning
confidence: 92%
See 1 more Smart Citation
“…Therefore although conformational restrictions do contribute to the negative DS for n $ 12, we conclude that they are not dominant. We must admit that our original explanation, in terms of the number of conformations available, 19 is wrong.…”
Section: Discussionmentioning
confidence: 92%
“…0.3 pK units less basic. 19 However, these variations are hardly greater than the errors, so no conclusions were drawn.…”
Section: Introductionmentioning
confidence: 99%
“…Cyclododecylamine Cyclododecylamine is produced by reduction of cyclododecanone oxime with sodium and an alcohol [89], by catalytic reduction of nitrocyclododecane with hydrogen [90], by Ritter reaction of cyclododecene with hydrocyanic acid [91], or by hydrogenation of cyclododecanone under amination conditions [92]. The reaction of cyclododecylamine with propylene oxide leads to a product that can undergo cyclization to give the fungicide dodemorph (BASF).…”
Section: N-methylcyclohexylaminementioning
confidence: 99%
“…On admet gtniralement que Jt est supCrieur 21 Jg pour les fragments tthani-q~e s ;~ par consCquent, selon le signe de L, on aboutira A une des trois conclusions ci-dessous : PO tir L > 0: n, < : la forme gauche est prCpondCrante L = 0: n, = i: les trois formes sont dans les mcmes proportions L < 0: nt > $: la forme trans est prCpondCrante P A R T I E E X P E R I M E N T A L E Nous avons 6tudie ces trois ethers d'une part a l'etat pur et a temperature ambiante, d'autre part a differentes temperatures, dilues dans le sulfure de carbone: le derive chlore est de provenance commerciale (Fluka-puriss) ; le derive broine a ete d6ja decrit comme intermediaire de synthtse. 6 On le prepare par action de PBr, sur le diethylene glycol. Cette reaction se fait dans la pyridine vers 0°C; 1e derive iodk n'ayant jarnais ete prepare, nous l'avons obtenu par la methode classique qui consiste B faire bouillir reflux le derive chlore avec l'iodure de sodium dans I'acetone.…”
Section: Introductionunclassified
“…TABLEAU6. D~RIVB IODf: Cette Ctude nous a permis d'analyser les spectres des 2,2'-dihalogtnoditthyltthers et d'affecter les dtplacements chimiques A chaque proton.…”
unclassified