Results 151 to 160 of about 2,614 (189)
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Dithieno‐1,4‐thiazines. Part I
Recueil des Travaux Chimiques des Pays-Bas, 1970AbstractThe synthesis of the first dithieno[2,3‐b : 2′,3′‐e]‐1,4‐thiazine is described, this compound was prepared by condensation of 3‐thiophenethiol with methyl 2‐bromo‐3‐nitrothiophene‐5‐carboxylate followed by reduction, acylation, bromination with NBS and ringclosure with Cu, K2CO3 in nitrobenzene.A thieno‐1,4‐benzothiazine was prepared in the ...
C. J. Grol, J. S. Faber
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Luminescence of Leuco-Thiazine Dyes
Journal of Fluorescence, 2003Details of the novel luminescence of the leuco forms of the thiazine dyes, methylene blue and thionine, are reported, including their emission maxima, quantum yields and lifetimes of the luminescence. Other work shows that this luminescence is independent of reducing agent type and solution pH and is a common feature of most thiazine dyes.
Lee, S.K., Mills, Andrew
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The Journal of Organic Chemistry, 1999
The reaction of N-(2-chloroethyl)diisopropylamine 1a with S2Cl2 allows the selective one-pot preparation of the tricyclic 4-(2-chloroethyl) bisdithiolothiazines 2-4 or, by addition of phosphorus pentasulfide at a late stage in the reaction, of the dithiolothiazine 5. The chloroethyl derivative 2 is also obtained from (2-diisopropylamino)ethanethiol 1b,
Charles W, Rees +6 more
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The reaction of N-(2-chloroethyl)diisopropylamine 1a with S2Cl2 allows the selective one-pot preparation of the tricyclic 4-(2-chloroethyl) bisdithiolothiazines 2-4 or, by addition of phosphorus pentasulfide at a late stage in the reaction, of the dithiolothiazine 5. The chloroethyl derivative 2 is also obtained from (2-diisopropylamino)ethanethiol 1b,
Charles W, Rees +6 more
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Chemischer Informationsdienst, 1984
AbstractDie aus dem Thiazinthion (I) hergestellten N‐Acylthiazinthione (III) zeigen gegenüber nucleophilen Verbindungen (IV) transacylierende Eigenschaften.
W. HANEFELD, E. BERCIN
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AbstractDie aus dem Thiazinthion (I) hergestellten N‐Acylthiazinthione (III) zeigen gegenüber nucleophilen Verbindungen (IV) transacylierende Eigenschaften.
W. HANEFELD, E. BERCIN
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1,2-Thiazines and benzo derivatives
1991Sulfur atoms can exhibit a valency of four allows the formation of 1-substituted 1, 2-thiazines with a double bond between two heteroatoms, and the second bond elsewhere in the ring. Although these compounds could be described as “dihydro derivatives,” they are isomeric with 1, 2-thiazines, in which the valency of the sulfur atom is two and there is no
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Tetrahydro-1,4-thiazin (Thiamorpholin)
Synthesis, 1970Harald HÜCKSTÄDT, Karl-Heinz MAYER
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[Pyrazolo[3,4d][1,3]thiazine systems].
Il Farmaco; edizione scientifica, 1979The synthesis of 1,2,4,6-tetrahydro-2-methyl-3-hydroxypyrazolo [3,4-d] [1,3]thiazine-4,6-dithione is described. By spectroscopic methods the anphionic structure of this and other related compounds is demonstrated. In addition, the action of alkylating reagents upon pyrazolo-[3,4-d] [1,3]thiazine-4,6-dithionic compounds is examined and described.
G, Auzzi +4 more
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Studies on derivatives of tetrahydro [1,3]-thiazine.
Archivum immunologiae et therapiae experimentalis, 1978In the course of studies on compounds with expected antiinflammatory and immunosuppressive activity a series of new derivatives of tetrahydro [1,3]-thiazine-4-one-6-carboxylic acid, tetrahydro [1,3]-thiazine-4,6-dione and 2-thiobarbituric acid have been synthetized.
Zawisza, Tadeusz +3 more
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