Neue 3-Sulfinatomethyl- und 3-Sulfonatomethyl-4-sulfomethyl-pyrrolidiniumbetaine und deren Salze sowie Verfahren zu deren Herstellung
申请人:Akademie der Wissenschaften der DDR
公开号:EP0163319A2
公开(公告)日:1985-12-04
Es werden neue 3-Sulfinatomethyl- und 3-Sulfonato- methyl-4-sulfomethyl-pyrrolidiniumbetaine der Formel
angegeben. Durch Umsetzung von Diallyl- oder Triallylammoniumsalzen bzw. deren Methallylderivaten mit Hydrogensulfit in Anwesenheit von Peroxodisulfaten allein.oder im Gemisch mit anderen Oxidationmitteln im pH-Wertbereich von 1,5 bis 6,0 in wäßriger Lösung werden diese neuen Verbindungen erhalten, wobei durch Wahl der Menge Hydrogensulfit in Kombination mit der Menge Peroxodisulfat unterschiedlich SO2⊖ oder SO3⊖ -substituierte sulfomethylpyrrolidiniumbetaine entstehen.
Die neuen verbindungen sind als spezielle Tenside in einem breiten pH-Wertbereich wirksam sowie als Zwischenprodukte vielseitig verwendbar.
Nucleophilic Substitution of Phthalimidomethyl Alkyl Sulfones. A New Convenient Synthesis of Sodium Alkanesulfinates
作者:Makoto UCHINO、Kunio SUZUKI、Minoru SEKIYA
DOI:10.1055/s-1977-24584
日期:——
ORGANIC PIGMENT FINE PARTICLES AND METHOD OF PRODUCING THE SAME, PIGMENT-DISPERSION COMPOSITION, PHOTOCURABLE COMPOSITION AND INK-JET INK CONTAINING THE SAME, AND COLOR FILTER USING THE SAME AND METHOD OF PRODUCING THE SAME
申请人:Sasaki Daisuke
公开号:US20100261103A1
公开(公告)日:2010-10-14
Organic pigment fine particles, having capability of self-dispersion, having an organic pigment and a polymer compound, the organic pigment fine particles of being nanometer-sized fine particles obtained by mixing an organic pigment solution and a second solvent, thereby to precipitate the fine particles in the mixed liquid, the organic pigment solution prepared by dissolving the organic pigment and the polymer compound in a first solvent, the second solvent of being served as a poor solvent for the organic pigment and being compatible with the first solvent, in which a compound insoluble in the second solvent is used as the polymer compound, and the organic pigment fine particles are provided with a capability of self-dispersing in a third solvent different from any of the first solvent and the second solvent.
Sulfinic Acids and Related Compounds 23. Preparation of Sulfinic Acids by the Reaction of Sulfonyl Halides with Thiols
作者:Chew Lee、Lamar Field
DOI:10.1055/s-1990-26884
日期:——
The reaction of arene- and alkanesulfonyl halides with p-thiocresol in the presence of triethylamine at - 76°C gives triethylammonium sulfinates, which after acidification afford sulfinic acids of 95-100% purity in yields of 51-92% for 18 typical representatives. The synthesis succeeds in certain instances where conventional reduction with aqueous sodium sulfite fails and in other instances often is superior. The method is rapid, mild, selective, convenient, and general, although a few limitations are reported. Characterizations of the sulfinic acids are effected by titration with aqueous sodium nitrite, by IR and 1H-NMR spectra, by preparation of either a S-benzylthiuronium salt or a p-nitrobenzyl ester, and either by elemental analyses or comparison with reported melting points of the acids and derivatives as appropriate.
Color photographic recording material with thiosulphonic acid ester
申请人:Agfa-Gevaert Aktiengesellschaft
公开号:US04868099A1
公开(公告)日:1989-09-19
A color photographic recording material having a magenta layer which is prepared from a casting solution containing a 4-equivalent magenta coupler of the pyrazolone series and a thiosulphonic acid ester compound has the properties of 2-equivalent magenta couplers in its coupling reactivity and the properties of 4-equivalent magenta couplers in its speed of color formation.