This view has been fairly well supported by later discoveries; but, in addition to pyridine and quinoline nuclei, alkaloids derived from isoquinoline are known.
One of a series of artificial blue or red dyes obtained from quinoline and lepidine and used in calico printing.
Prepare a bath as for rose, with some solution of eosine, a little quinoline yellow, according to tone, and a little acetic acid, just enough to give the bath a slightly sour taste.
For this dye the quinoline yellow manufactured by the Actien Gesellschaft fuer Anilin Fabrikation, Berlin, is specially suitable).
One of several isomeric organic bases of the quinolineseries of alkaloids.
It the nucleus of many organic bodies, especially of certain alkaloids and related substances; hence, by extension, any one of the series of alkaloidal bases of which quinolineproper is the type.
Quinoline and its homologue quinaldine have been utilized as sources of colouring-matters.
A green dye-stuff, known as quinoline green, was formerly made by the same method as that employed for producing the phosgene colours by Caro and Kern's process (p.
This important discovery was made in 1880 by the Dutch chemist Skraup, who found that by heating aniline with sulphuric acid and glycerin in the presence of nitrobenzene, quinoline is produced.
But as chemistry enabled the manufacturer to obtain aniline in quantity from benzene, so science has placed quinoline at his disposal.
Miller prepared a homologue of quinoline (quinaldine) in 1881, by the action of sulphuric acid and a certain modification of aldehyde known as paraldehyde on aniline.
Jacobsen in 1882 under the name of quinoline yellow, a colouring-matter which forms a soluble sulpho-acid by the action of sulphuric acid.
Similarly there is a coal-tar base known as acridine, which is found associated with the anthracene, and which is related to quinoline in the same way that anthracene is related to naphthalene.
I haven't a doubt but that my analyses of the inks are correct and on one side quinoline was used and on the other nitrate of silver.
Steam is then passed in as rapidly as possible until all the quinoline has distilled.
The method above described is the most satisfactory for the preparation of quinoline itself, but for the preparation of homologues of quinoline, the use of arsenic acid is preferable, since the yields are somewhat greater.
The quinoline is distilled exactly as described above, the aqueous portions of the distillate being distilled with steam until all the quinoline has been isolated.
The distillate is allowed to cool, and the crude quinoline separated.
The aqueous layer of the distillate is again distilled with steam until all the quinoline has been volatilized and collected in about 3 l.
Beyond the fact that when they are hydrolyzed they yield quinoline and indole, their composition is unknown.
When distilled with potassium hydrate, quinoline is formed.
When cinchonine is distilled with solid potassium hydrate, it yields pyrrol and bases of both the pyridine and quinoline series.
When distilled with potassium hydrate, quinine yields quinoline and its homologues.
Shortly after, by an application of the same principle, Dobner and Miller effected the synthesis of lepidine, the second member of the quinoline series.
Cinchonidine, when heated with potassium hydrate, yields quinoline also, and with nitric acid the same products as cinchonine.
The study of the decomposition products of the cinchona alkaloids especially points quite distinctly to the probable existence in quinine of a hydrogen addition product of pyridine, in combination with a methyl-quinoline group.
Defn: A white, crystalline, nitrogenous hydrocarbon, C9H9NO, obtained from certain derivatives of cinnamic acid and closely related to quinoline and carbostyril.
It is a member of the quinoline series, and is probably identical with lepidine.
Naphthyridines and naphthinolines result from the condensation of two pryridine and two quinoline nuclei respectively; and quino-quinolines are unsymmetrical naphthyridine nuclei condensed with a benzene nucleus.
I now allow a small drop of quinoline to fall upon it, and immediately it spreads out over the surface, forming a hole in its centre (Fig.
In this instance I float on the water surface a globule of lubricating oil, with which quinolinedoes not readily mix, and which does not act so immediately as dimethyl-aniline.
Merely touching the upper surface of the oil with a rod moistened with quinoline has no effect, and hence the result is due to the weakening of the interfacial tension.
A similar effect is obtained when quinoline is dropped into a globule of aniline, and may be obtained with various other liquids.
Reference has already been made to the breaking-up of a quinoline film into globules.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "quinoline" in a variety of sentences. We hope that you will now be able to make sentences using this word.
