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Predecessor
Volume 70, Issue 7-8
Displaying 1-20 of 20 articles from this issue
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D. U. Mizoguchi1950Volume 70Issue 7-8 Pages 363-371
Published: August 25, 1950
Released on J-STAGE: February 19, 2010
JOURNAL FREE ACCESSDownload PDF (1799K) -
Ueber die chemischen Eigenschaften des Benzselenazols. (2)Eiji Ochiai, Joju Haginiwa, Kiyoshi Komatsu1950Volume 70Issue 7-8 Pages 372-376
Published: August 25, 1950
Released on J-STAGE: February 19, 2010
JOURNAL FREE ACCESSUm die Reaktivität des Benzselenazols gegen die elektrophile Substitution zu prüfen, haben die Verfasser die Allylumlagerung von 5-Allyloxy-2-methylbenzselenazol (VI) und die Diazokuppelung von 5-Oxy-2-methylbenzselenazol (V), 5-Oxy-4-acetylamino-2-methylbenzselenazol (VII) und 4, 4′-Bis-(2-methyl-5-oxybenzselenazolyl)-methan (VIII) untersucht. (VI) ist in der Hitze leicht zersetzlich, und die Versuche durch die Allylumlagerung waren erfolglos. (VII) und (VIII) sind im Vergleich mit (V) gegen die Diazokuppelung weitaus reaktiv.
Hiermit konnten die Verfasser bestätigen, dass sich die Reaktivität der Benzolhälfte des Benzselenazols fast analog verhält wie beim Benzthiazol.View full abstractDownload PDF (919K) -
Ueber die Nitrierung von 3-Bromchinolin-N-oxydToshihiko Okamoto1950Volume 70Issue 7-8 Pages 376-381
Published: August 25, 1950
Released on J-STAGE: February 19, 2010
JOURNAL FREE ACCESSDie Nitrierung von 3-Bromchinolin-N-oxyd mit Salpeter-Schwefelsäure wurde bei verschiedenen Temperaturen untersucht. Bei 0° wurde hauptsächlich 5- und nebenbei 8-Nitro-3-bromchinolin-N-oxyd erhalten. Mit der Steigerung der Reaktionstemperatur tritt die Aktivität der 4-Stellung ein, und bei 60-70° wurde das 4-Nitroderivat als das Hauptprodukt und nebenbei 5- und 8-Nitroderivate erhalten. Die Ausbeute an 4-Nitro-3-bromchinolin-N-oxyd ist jedoch geringer als beim Chinolin-N-oxyd. Bei über 120° tritt die Deoxydation der N-Oxyd-Gruppe ein, sodass sich die Ausbeute von 4-Nitro-3-bromchinolin-N-oxyd erheblich herabsetzt unter Bildung von 4-, 5- und 8-Nitro-3-bromchinolin. Hierbei wurden zwei Dibrom-mononitrochinolin erhalten, von denen eins als 3, 8-Dibrom-5-nitrochinolin identifiziert wurde.View full abstractDownload PDF (1143K) -
2′-Phenylderivat des Chinins und HydrochininsGoro Kobayashi1950Volume 70Issue 7-8 Pages 381-383
Published: August 25, 1950
Released on J-STAGE: February 19, 2010
JOURNAL FREE ACCESSAr.-Mono-N-oxyd des Chinins bzw. Dihydrochinins wurde durch Einwirkung von Phenylmagnesiumbromid in das entsprechende 2′-Phenylderivat übergeführt. Das hiermit hergestellte 2′-Phenyl-derivat des Chinins bzw. Dihydrochinins wurde je mit dem entsprechenden Präparat aus Phenyllithium und Chinin bzw. Dihydrochinin identifiziert.View full abstractDownload PDF (444K) -
Zur Kenntnis über die Nitrierung von Chinolin-N-oxydEiji Ochiai, Toshihiko Okamoto1950Volume 70Issue 7-8 Pages 384-388
Published: August 25, 1950
Released on J-STAGE: February 19, 2010
JOURNAL FREE ACCESSDie Nitrierung von Chinolin-N-oxyd mit Salpeter-Schwefelsäure wurde bei verschiedenen Temperaturen untersucht. Bei 0° wird es hauptsächlich in C5 und C8 nitriert, wie beim Chinolin selbst der Fall ist, und erst mit der Erhöhung der Reaktionstemperatur überwiegt schnell die Reaktivität von C4. Bei über 100° greift die Deoxydation der N-Oxyd-Gruppe ein, sodass bei über 120° die Bildung von Chinolin, 8- und 5-Nitrochinolin bemerkbar ist. Hiermit wurde es vermutet, dass von den polaren Effekten der N-Oxyd-Gruppe der elektromere Effekt die Hauptrolle dabei spielt. Der polare Effekt der N-Oxyd-Gruppe ist jedoch schon bei niederer Temperatur bemerkbar. Bei längerem Stehenlassen auf 0-10° wurde 4, 8-Dinitro-chinolin-N-oxyd neben 8- und 5-Nitrochinolin-N-oxyd erhalten. 8-, 5- und 4-Nitrochinolin-N-oxyd geben bei analoger Nitrierung 4, 8- und 4, 5-Dinitrochinolin-N-oxyd.View full abstractDownload PDF (808K) -
Nitration of 2, 4-Dimethylquinoline (Addendum)Eiji Ochiai, Junzaburo Takeuchi1950Volume 70Issue 7-8 Pages 389-391
Published: August 25, 1950
Released on J-STAGE: February 19, 2010
JOURNAL FREE ACCESSThree isomers are obtained on nitration of 2, 4-dimethylquinoline. The hitherto uncertain isomer was identified as 5-nitro-2, 4-dimethylquinoline. The following new compounds were prepared: 5- and 6-amino-2, 4-dimethylquinoline, 5-acetylamino-2, 4-dimethylquinoline and 5-amino-8-chloro-2, 4-dimethylquinoline.View full abstractDownload PDF (694K) -
Synthese von 2′-substituiertem DihydrochininEiji Ochiai, Yoshiro Kobayashi1950Volume 70Issue 7-8 Pages 391-393
Published: August 25, 1950
Released on J-STAGE: February 19, 2010
JOURNAL FREE ACCESS9-Benzoyl-2′-chlordihydrochinin wurde durch Einwirkung von Phosphoroxychlorid auf 9-Benzoyl-2′-oxydihydrochinin hergetsellt. Das letztere wurde durch Einwirkung vom entsprechenden Natriumalkolat und darauffolgender Verseifung in 2′-Butoxy- bzw. 2′-methoxydihydrochinin übergeführt. Bei der Einwirkung von Piperidin auf 9-Benzoyl-2′-chlordihydrochinin wurde 9-Benzoyl-2′-N-piperidyldihydrochinin erhalten.View full abstractDownload PDF (594K) -
Ueber die Nitrierung von Benz-(h)-chinolinIssei Iwai, Shoji Hara1950Volume 70Issue 7-8 Pages 394-400
Published: August 25, 1950
Released on J-STAGE: February 19, 2010
JOURNAL FREE ACCESSDurch die Nitrierung von Benzo-(h)-chinolin mit Salpeter-Schwefelsäure bei 0° wurden 10- und 9-Nitroderivat im Verhältnis von etwa 30-40 und 18-19% erhalten. Nebenbei wurde eine Dinitroderivat in kleiner Menge erfasst. Bei diesem Versuche 6-, 7- bzw. 10-Nitrobenzo-(h)-chinolin, 5-, 9- bzw. 10-Aminobenzo-(h)-chinolin, Chinolino-(7, 8-7′, 8′)-chinolin und Chinolino-(7, 8-6′, 5′)-chinolin neu hergestellt. Die Absorptionsspektren der beiden Chinolinochinolinen wurden mit derselben von Chinolino-(7, 8-8′, 7′)-chinolin und Chinolino-(7, 8-5′, 6′)-chinolin vergleichend dargestellt.View full abstractDownload PDF (1038K) -
Reaction of 4-Oxohomocamphor with Nitrous AcidKen'iti Takeda, Wataru Nagata1950Volume 70Issue 7-8 Pages 401-404
Published: August 25, 1950
Released on J-STAGE: February 19, 2010
JOURNAL FREE ACCESSReaction of 4-oxohomocamphor with nitrous acid at a low temperature (0-5°) resulted, contrary to our expectations, in the formation of 3-nitro-4-oxohomocamphor, m.p. 128° as the chief product, and a small amount of 3-oximino-4-oxohomocamphor, m.p. 113°. As a result of investigating how nitration could occur with nitrous acid at such a low temperature, it was found that the oxygen in the air seemed to act catalytically in this reaction, and nitrous acid probably acted as a carrier of oxygen. Therefore, the same reaction was carried out in inactive gases (N2 or CO2) and oximino-compound was obtained as the main product. Both compounds were reduced catalytically, giving the same amine, 3-amino-4-oxohomocamphor, m.p. 228° (decomp.).View full abstractDownload PDF (684K) -
The Isolation of Sanshoöls and the Structure of Sanshoöl-ITutou Aihara1950Volume 70Issue 7-8 Pages 405-409
Published: August 25, 1950
Released on J-STAGE: February 19, 2010
JOURNAL FREE ACCESSThe pungent principles of Xanthoxylum piperitum DC., Sanshoöl-I and -II were isolated and the structure of sanshoöl-I was confirmed as N-isobutyl-2, 4, 8-dodecatrieneamide.View full abstractDownload PDF (798K) -
The Structure of Sanshoöl-IITutou Aihara1950Volume 70Issue 7-8 Pages 409-411
Published: August 25, 1950
Released on J-STAGE: February 19, 2010
JOURNAL FREE ACCESSThe structure of sanshoöl-II was studied and the formula was represented as N-isobustyl-2, 4, 8, 10-dodecatetraeneamide.View full abstractDownload PDF (492K) -
Structure of MagnolamineMasao Tomita, Eiichi Fujita1950Volume 70Issue 7-8 Pages 411-416
Published: August 25, 1950
Released on J-STAGE: February 19, 2010
JOURNAL FREE ACCESSThe structure of magnoline and magnolamine, two alkaloids from the leaves of Magnolia fuscata, were reexamined. The tentative structure of dauricine type, proposed by Proskurnina, was examined through oxidation product of the two alkaloids, magnolamic acid, or dimethoxydiphenyl ether-dicarboxylic acid. For its determination, 2, 3-dimethoxy-diphenyl ether-5, 4′-dicarboxylic, 2, 6-dimethoxydiphenyl ether-4, 4′-dicarboxylic acids were synthesized but neither compound coincided with magnolamic acid.View full abstractDownload PDF (970K) -
A New Synthesis of 3, 13, 19-Trimethyltricosanoic AcidTatsuo Moroe1950Volume 70Issue 7-8 Pages 416-422
Published: August 25, 1950
Released on J-STAGE: February 19, 2010
JOURNAL FREE ACCESS(1) The author synthesized 3, 13, 19-trimethyltricosanoic acid which is the most probable formula of phthioic acid present in tubercle bacilli.
(2) The method of synthesis which was taken by the author, the electrolytic condensation of 6-methyldecoic acid and monoester of 2, 12-dimethyltridecane-1, 13-dicarboxylic acid, is more convenient than that of Polgar and Robinson.
(3) The acid synthesized has the following physical constants: b.p.0.1 205-208°; nD171.4600. The amide melted at 43-44°.
(4) The author obtained a new derivative, p-bromophenacyl ester, melting at 97-98°.View full abstractDownload PDF (1192K) -
Iwao Nakayama1950Volume 70Issue 7-8 Pages 423-424
Published: August 25, 1950
Released on J-STAGE: February 19, 2010
JOURNAL FREE ACCESSDownload PDF (247K) -
Reactions of bis-[Arylsulfonyl]-thiazolone-imide (2) with Alcohols in the Presence of Guanidine CarbonateKyosuke Tsuda, Susumu Sato, Hideo Okeda, Saburo Motoyoshi1950Volume 70Issue 7-8 Pages 425-432
Published: August 25, 1950
Released on J-STAGE: February 19, 2010
JOURNAL FREE ACCESS1) Bis-[aryl-sulfonyl]-thiazolone-imide (2) reacts with methanol in the presence of guanidine carbonate to yield 3-methyl-thiazolone-aryl-sulfonylimide (2) as a chief product of the reaction.
2) Ethyl, allyl, n-butyl, isoamyl and benzyl alcohols, and ethylene glycol, have been found to react in a similar manner to give 3-alkylated 2-arylsulfonylaminothiazole.
3) It has been shown that guanidine carbonate catalyzes alkylation of acetosulfathiazole with arylsulfonyl ester to yield 3-alkylated derivatives.
4) A possible mechanism is suggested to account for these reactions.View full abstractDownload PDF (1327K) -
The Isolation of meso-Inositol and Scillitol from the OvariesKyosuke Tsuda, Masaaki Kawamura1950Volume 70Issue 7-8 Pages 432-435
Published: August 25, 1950
Released on J-STAGE: February 19, 2010
JOURNAL FREE ACCESSMeso-inositol and scillitol were isolated from the ovaries of globefish of Sphoeroides genus, during the course of research on tetrodotoxin.View full abstractDownload PDF (584K) -
Antagonism between p-Nitraniline and p-Aminobenzoic AcidSadasuke Okano1950Volume 70Issue 7-8 Pages 435-439
Published: August 25, 1950
Released on J-STAGE: February 19, 2010
JOURNAL FREE ACCESSBacteriostatic action of p-nitraniline was found to be reversed by p-aminobenzoic acid (antagonism coefficient: ca. 2, 500). The action of p-aminobenzene-antimonic acid, and that of ortho and meta isomers of nitraniline, however, were not reversed by p-aminobenzoic acid. Mechanism of specific antagonism between p-nitraniline and p-aminobenzoic acid was discussed.
Thermal analyses showed that p-nitraniline and p-aminobenzoic acid formed molecular compound (1:1) and m-nitranline and p-aminobenzoic acid formed no compound.View full abstractDownload PDF (668K) -
Reaction of 1, 2-Naphthoquinone-4-sulfonic Acid with Active Methylene and Primary AminesMorizo Ishidate, Takeichi Sakaguchi, Setsuo Hirokawa1950Volume 70Issue 7-8 Pages 439-443
Published: August 25, 1950
Released on J-STAGE: February 19, 2010
JOURNAL FREE ACCESS1. 1, 2-Naphthoquinone-4-sulfonate with active methylene compounds at room temperature forms two kinds of condensate according to the acidity of the methylene groups, the one is 1 or 2-quinonide of the naphthoquinone sulfonate containing sulfonic group, and the other, 4-derivative of 1, 2-naphthoquinone, not containing sulfonic acid.
2. With primary amines, the same reagent also forms the two types of amido-derivatives, the one being a condensate at 1- or 2-position, the other, a condensation product at 4-position containing no sulfonic group. The reaction mechanism is discussed.View full abstractDownload PDF (700K) -
Reaction of m-Dinitrobenzene and Its DerivativesMorizo Ishidate, Takeichi Sakaguchi1950Volume 70Issue 7-8 Pages 444-446
Published: August 25, 1950
Released on J-STAGE: February 19, 2010
JOURNAL FREE ACCESSThe color reactions of nitrobenzene derivatives-1, 3-dinitrobenzene, 1, 3, 5-trinitrobenzene and their hydroxyl or chloro-derivatives with active methylene compounds are assumed to be due to the formation of a quinoid condensate at 4-position, by the seperation of hydrogen molecule, water or hydrogen chloride, respectively. The reaction mechanism was discussed.View full abstractDownload PDF (481K) -
Komei Miyaki, Nisaburo Ikeda, Nobutaro Ishii, Yasuko Mitoma1950Volume 70Issue 7-8 Pages 446-449
Published: August 25, 1950
Released on J-STAGE: February 19, 2010
JOURNAL FREE ACCESSTwenty-three chemicals out of seventy-two were found to be toxic to snails, O. nosophora, the intermediate host of Schistosoma japonicum.
It seems that there is no special formula for molluscicides, but there is some specificity of substituted atom and their position in each derivative group.
Trichlorophenol, pentachlorophenol, copper salt of pentachlorophenol, chloroxylenol, p-thiocresol, p-nitraniline, thioresorcinol, p-nitrophenylethyl carbonate, 3-nitro-2-aminotoluene showed remarkable molluscicidal results, and seem to be practically applicable.View full abstractDownload PDF (562K)
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