Results 341 to 350 of about 114,347 (402)

Aryl Methyl Sulfone Construction from Eco-Friendly Inorganic Sulfur Dioxide and Methyl Reagents.

ChemSusChem, 2019
A three-component cross-coupling protocol of boronic acid, sodium metabisulfite, and dimethyl carbonate was developed for the construction of significant functional methyl sulfones, in which introduction of sulfur dioxide at the last stage was ...
Ming Wang, Jiaoyan Zhao, Xuefeng Jiang
semanticscholar   +1 more source

Drug Reactions to the Sulfones

Archives of Dermatology, 1970
In a brief temporal span, two patients treated with diaminodiphenyl sulfone had significant reactions to the drug. These were severe hemolysis and the hitherto undescribed reaction of cholestatic jaundice. Review of the literature in regards to indications for sulfone therapy and the drug-associated reactions was accomplished.
openaire   +4 more sources

ChemInform Abstract: AROMATIC SULFONATION 84. SULFONATION OF BI‐ AND TRIPHENYLENE

Chemischer Informationsdienst, 1982
AbstractEbenso wie bei Triphenylen (II) aus sterischen Gründen tritt bei der Monosulfonierung des Biphenylens die SO3 H‐Gruppe in die 2‐Stellung.
Hans Cerfontain, H. J. A. Lambrechts, Kenneth K. Laali   +2 more
openaire   +3 more sources

Asymmetric Mannich Reaction and Construction of Axially Chiral Sulfone-Containing Styrenes in One Pot from α-Amido Sulfones Based on the Waste-Reuse Strategy.

Organic Letters, 2018
A simultaneous asymmetric Mannich reaction and the construction of axially chiral sulfone-containing styrenes in one pot from α-amido sulfones based on the waste-reuse strategy was demonstrated.
Dongmei Li, Yun-Xuan Tan, Lei Peng, Shan Li, N. Zhang, Yidong Liu, Hailong Yan   +6 more
semanticscholar   +1 more source

Pervaporation behavior of asymmetric sulfonated polysulfones and sulfonated poly(ether sulfone) membranes

Journal of Applied Polymer Science, 2000
The sulfonation of polymers and the pervaporation behavior of asymmetric polymeric membranes are described in this study. We confirmed that the sulfonic acid group was successively introduced into the polymer chain by FTIR and 1H-NMR characterization.
I. S. Byun, J. W. Seo, I. C. Kim
openaire   +2 more sources

Optimization of Vinyl Sulfone Derivatives as Potent Nuclear Factor Erythroid 2-Related Factor 2 (Nrf2) Activators for Parkinson's Disease Therapy.

Journal of Medicinal Chemistry, 2018
We previously developed a novel series of vinyl sulfones as nuclear factor erythroid 2-related factor 2 (Nrf2) activators with therapeutic potential for Parkinson's disease (PD).
J. Choi, Siwon Kim, Jong-Hyun Park, Hyeon Jeong Kim, Su Jeong Shin, Jin Woo Kim, S. Woo, Changho Lee, S. Han, Jaeick Lee, A. Pae, G. Han, Ki Duk Park   +12 more
semanticscholar   +1 more source

Revisit to the sulfonation of pyrroles: is the sulfonation position correct?

Tetrahedron Letters, 2000
Abstract Sulfonation of pyrrole and its 1-methyl derivatives with a sulfur trioxide–pyridine complex was found to give 3-sulfonated pyrroles, but not 2-sulfonates as described in textbooks. The replacement of 1-methyl-2-tri-n-butylstannylpyrrole with trimethylsilyl chlorosulfonate, followed by quenching with aq.
Akira Mizuno, Yukiko Kan, Harukazu Fukami, Shinsuke Matsuki, Tomoe Kamei, Yoshiaki Oyama, Kazuo Miyazaki   +6 more
openaire   +2 more sources

Sulfonation of Polyamides

Israel Journal of Chemistry, 1974
AbstractThe sulfonation of polyamides (Nylons‐3,6,11 and 6,6) was investigated using fuming sulfuric acid and solutions of SO3 in CCl4. The sulfonated polymers were soluble in water and insoluble in ethanol. Acid hydrolysis of the polymers and quantitative determination of the amino acids in the hydrolysate showed the presence of α‐sulfo amino acids ...
Albert Zilkha, Jacob Vaya
openaire   +2 more sources

Hydrophilic modification of poly(aryl sulfone) membrane materials toward highly-efficient environmental remediation

Frontiers of Chemical Science and Engineering, 2021
Fan Yang, J. Huang, Lijun Deng, Yanqiu Zhang, Guodong Dang, L. Shao   +5 more
semanticscholar   +1 more source

The metabolism of the surfactants dodecyl sulfonate and hexadecyl sulfonate in the rat

Toxicology and Applied Pharmacology, 1978
Abstract When [1-14C]dodecyl sulfonate and [1-14C]hexadecyl sulfonate were administered orally and ip to free-ranging rats and iv to anesthetized rats, the major route of excretion of radioactivity was urinary. Small amounts only of parent surfactant appeared in the feces of animals dosed orally with [1-14C]dodecyl sulfonate, but large amounts of [1 ...
Douglas Howes, Anthony H. Olavesen, Andrew J. Taylor, J. Gordon Black   +3 more
openaire   +3 more sources