16114-39-9Relevant academic research and scientific papers
Synthesis and characterization of new compounds containing 1,4-dithiintetracarboxydiimide units
Gǎinǎ, Constantin
, p. 601 - 607 (2007/10/03)
New compounds containing 1,4-dithiintetracarboxydiimide units were synthesized by the disubstitution reaction of N-substituted 2,3- dichloromaleimide with sodium sulflde nonahydrate or thiourea. IR, UV-vis and 1H-NMR spectroscopy, as well as elemental analysis, confirmed their structures. Thermal conversion of 1,4-dithiine ring to thiophene was monitored by differential calorimetry (DSC) and thermogravimetric (TGA) measurements.
A reexamination of the reactions of 2,3-dichloro-1,4-naphthoquinone with thioamides
Katritzky,Fan
, p. 1679 - 1682 (2007/10/02)
2,3-Dichloro-1,4-naphthoquinone reacts with thioamides and thiourea to give mixtures of condensed thiazoles and thianthrenes.
Syntheses of Polycyclic 1,4-dithiines and Related Heterocycles
Matsuoka, Masaru,Iwamoto, Akihiro,Furukawa, Naoyuki,Kitao, Teijiro
, p. 439 - 443 (2007/10/02)
Reactions of dihalogenoquinones or dihalogenoquinoxalines with thioamides gave the corresponding 1,4-dithiines in high yields.Many of polycyclic 1,4-dithiin derivatives can be synthesized by the reaction of dihalogenoheterocycles with thioamides, and they
Reaction of 2,3-Dichloro-1,4-naphthoquinone with Dithiooxamide. Synthesis of Dibenzothianthrene-5,7,12,14-tetrone
Matsuoka, Masaru,Iwamoto, Akihiro,Kitao, Teijiro
, p. 1445 - 1447 (2007/10/02)
The reaction of 2,3-dihalogeno-1,4-naphthoquinone with dithiooxamide gave dibenzothianthrene-5,7,12,14-tetrone in high yield but not 2,2'-bis(naphthothiazole-4,9-dione) which was previously reported.A similar reaction of 3,4-dichloro-N-phenylm
ALKYLIERUNGS- AND ARYLIERUNGSREAKTIONEN MIT GEMINALEN DITHIOLATEN
Rudorf, W. D.,Augustin, M.
, p. 329 - 336 (2007/10/02)
Acyl acetonitriles 1 react with carbon disulfide in the presence of sodium hydride to give disodium salts 2.Treatment of 2 with an alkylation reagent yields the open chain or cyclic acyl cyanketene S,S-acetals 3,4,8 and 10, respectively.Arylation to 11 is successful with 2,4-dinitro-chlorobenzene.Adding only one equivalent of methyl iodide to 2 and acidifying the reaction mixture lead to the monoalkylated compounds 7, whereas β-hydroxythioanilides 12 are available by reaction of 1 with phenyl isothiocyanate.A comparison of the ?-values shows that there exists the same type of the proton's chelation of the OH-group in 7 and 12.
