Über die Einwirkung der schwefligen Säure und ihrer Salze auf Chinolinderivate (II. Mitteil.)

Abstract

I42 W o r o s h t z o w ,Kogan: Einwirkum der echweiZiqen Saure [Jahrg. 6s I ) Umkrystallisiert. Sbst. (Schmp. 2 8 0~) : 0.1244, 0.1140 g Sbst.: 0.4263. 0.3902 g CO,, 0.0700, 0.0699 g H,O; gef. C 93.50, 93.40. H 6.86, 6.85. -2) Sublimiert. Sbst.: 0.1064. 0.1240 g Sbst.: 0.3648, 0.4245 g CO,, 0.0654, 0.0748 g HnO; gef. C 93.54, 93.4'. H 6.30, 6.72; ber. fur Tetraphenyl-methan: C 93.70. H 6.30. Die Identitat der erhaltenen Substanz mit Tctraphenyl-methan wurde ferner durch die Nitrierung mit rauchender Salpetersaure nach Gombergla) gepriift. Hierbei wurden gelbe, nadelformige. bei 3300 schmelzende Krystalle von Trinitro-tetraphenylmethan rrhalten. 2, Journ. prakt. Chem. [2] 69, 88 [1904]. 3) B. 68, 57 :1929]. I 7) K. S l a t s u m u r a , Jourii. Amer. cllem. SOC. 49, 813 [rg27:.

The Reactions Of 8-Quinolinol

“…A quantitative yield of 8-aminoquinoline results from heating oxine with ammonium sulfite in an autoclave for several hours at 150°C. (303). As indicated by the following reaction sequence, the keto tautomer of oxine is the reactive form.…”

Bacterial Aromatic Sulfonates - A Bucherer Reaction in Nature?

“…Reaction of quinoline with SO 2 in aqueous solution and with aqueous NaHSO 3 gave, however, yellow crystals with a mp. In analogy to 2a addition products of the hydrogensulfite ion (but formulated as ammonium sulfonates) to the respective keto forms were formulated as intermediates, without reference to the earlier combustion analysis data [32]. Form the combustion analysis data an elemental composition of C 9 H 7 N.SO 2 was calculated.…”

“…80-81°C. An explanation could be that under mild conditions (warming in a water bath [31]) a sulfite ester is obtained while under more drastic ones (7 hours in an autoclave at 150°C [32]) the quinoline analog of 2a and subsequently aminoquinoline is formed. By both procedures yellow crystals (mp.…”