Efficient and selective oxidation of phenyl sulfide to the corresponding sulfoxide or sulfone was achieved in moderate to high yields in a one-pot manner,by using Fe 2O 3,Co 2O 3 as catalyst,with molecular oxygen in the presence of valeraldehyde under mild conditions.
The polycondensation process of phenolphthalein (PP), 4, 4'—thiobisphenol(Bis—T), 4,4'—dichlorodiphenylsulfone(DCDPS)tripolymer and its thermal and partial mechanical properties had been studied, respectively.
On the basis of single factor analysis, the optimal operation variables were described through orthogonal experiment: when the mole ratio of diphenylsulfide and 4,4′-dichlorodiphenyl- iodonium hexafluorophosphate was 6:1, while the mole ratio of nantokite catalyst and diphenylsulfide was 5‰at 120℃for 3h, the yield was 87.6﹪.
A facile preparation of DDS was reported. p-Nitrochlorobenzenewas treated with sodium sulfide to give 4-amino-4'-nitrodiphenylsulfide(1),which was then oxidized to 4,4'-dinitrodiphenylsulfone(2)in 81% yield,usingsodium perborate as oxidant,which has not yet been reported in the literature.
Benzene ring, groups containing sulphur, and double bond were introduced into the structure of optical resin monomer successfully, and a new kind of optical resin monomer bis[4 (methacryloylthio)phenyl] sulfide(MPSDMA) was synthesized by means of sulfochlorination, reduction, and low temperature phase transfer catalysis reaction.
The errors introduced by the acylation of hydrogen peroxide with the carboxylic acid in the course of sample treatment with the enzyme were eliminated by adding diphenyl sulfide or dimethyl sulfoxide, which selectively reduced the peroxy acids.
Peroxy acids were determined by GLC from the yields of the oxidation products of diphenyl sulfide with the peroxy acid (diphenyl sulfoxide and diphenyl sulfones).
4-Acetyldiphenyl sulfide and 4,4'-diacetyldiphenyl sulfide were synthesized from diphenyl sulfide and acetyl chloride in the presence of AlCl3 as catalyst in the Friedel-Crafts reaction.
Heterocycles with 5,7-diimino-2,5,6,7-tetrahydro-1H-cyclopenta[cd]phenalene, diphenyl sulfone, diphenylbenzanilide, and diphenyl sulfide fragments were synthesized.
Molecular structure of diphenyl sulfide in the gas phase
In its presence, under phase-transfer conditions, dipropyl disulfide reacts with bromobenzene to form propyl phenyl sulfide, and tellurium reacts with ethyl bromide to form diethyl telluride.
Steric and electronic structure of the methyl phenyl sulfide molecule was studied by nonempirical quantum-chemical methods.
Under conditions of phase-transfer catalysis, phenyl 2-propynyl sulfide is converted into allenyl phenyl sulfide and phenyl 1-propynyl sulfide.
It was first shown that crown ethers catalyze the oxidation of organic sulfur compounds (methyl phenyl sulfide to sulfoxide and sulfone, benzothiophene and dibenzothiophene to sulfones) with hydrogen peroxide.
Laser photolysis studies of β-bond cleavage of phenacyl phenyl sulfide in acetonitrile
The epoxy resins used were O-cresol Novolac (OCN), dicyclopentadiene (DCPD), and biphenyl sulfide (BIPHS) epoxy resins.
A facile preparation of DDS was reported.p-Nitrochlorobenzenewas treated with sodium sulfide to give 4-amino-4'-nitrodiphenylsulfide(1),which was then oxidized to 4,4'-dinitrodiphenylsulfone(2)in 81% yield,usingsodium perborate as oxidant,which has not yet been reported in the literature.2 was converted to the title compound by Fe-HCl reduction.
The polycondensation process of phenolphthalein (PP), 4, 4'—thiobisphenol(Bis—T), 4,4'—dichlorodiphenylsulfone(DCDPS)tripolymer and its thermal and partial mechanical properties had been studied, respectively. The reaction process shows that the proper polycondensation temperature is 185℃～195℃. (PP/Bis—T) PES had been proved to be of homophase copolymer with random structure,together with good high—temperature resistance and excellent mechanical performance.
The MNDO semiempirical quantum chemistry method was used to study theconformation of diphenyl sulfide and diphenyl sulfoxide. The results show that the opti-mal conformation of the two compounds is in twist state,the rotation angles related tothe plane of bridge bonds are(67°,67°) and(72°,72°) respectively.