Results 341 to 350 of about 60,682 (387)

Synthesis of ( E)-β-Selenovinyl Sulfones through a Multicomponent Regio- and Stereospecific Selenosulfonation of Alkynes with Insertion of Sulfur Dioxide.

Organic Letters, 2018
A novel and practical method for the selenosulfonation of alkynes with the insertion of sulfur dioxide has been developed. A series of β-(seleno)vinyl sulfones with high levels of regio- and stereoselectivity have been prepared.
K. Sun, Zuodong Shi, Zhenhua Liu, Baixue Luan, Jiali Zhu, Y. Xue   +5 more
semanticscholar   +1 more source

Diversity-Oriented Desulfonylative Functionalization of Alkyl Allyl Sulfones.

Angewandte Chemie, 2019
The diversity-oriented desulfonylative functionalization of alkyl allyl sulfones with various sulfone-type reagents by radical chemistry has been developed. The readily installed allylsulfonyl moiety acts as a C-radical precursor, which is substituted by
Yong Xia, A. Studer
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

Photoinduced synthesis of allylic sulfones using potassium metabisulfite as the source of sulfur dioxide

Organic Chemistry Frontiers, 2019
Synthesis of allylic sulfones through a photoinduced three-component reaction of aryl/alkyl halides, potassium metabisulfite, and allylic bromides under ultraviolet irradiation at room temperature is developed.
Jun Zhang, Kaida Zhou, Guanyinsheng Qiu, Jie Wu   +3 more
semanticscholar   +1 more source

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

Functionalization of alkynes and alkenes using cascade reaction approach: Synthesis of β-keto sulfones under metal-free conditions.

Journal of Organic Chemistry, 2019
Here, we are reporting a multi-component cascade reaction approach for the synthesis of β-keto sulfones by exploiting differential reactivity pattern of substrates under open-atmosphere and metal-free conditions.
Mukesh Kumar, Riyaz Ahmed, Maninder Singh, Shweta Sharma, Thanusha Thatikonda, P. Singh   +5 more
semanticscholar   +1 more source

Recent synthetic applications of α-amido sulfones as precursors of N-acylimino derivatives

Organic Chemistry Frontiers, 2019
α-Amido sulfones can be directly used as N-acylimine or N-acyliminium ion precursors in several synthetic processes aimed at the preparation of nitrogen containing compounds.
E. Marcantoni, A. Palmieri, M. Petrini
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

Organocatalytic asymmetric deoxygenation of sulfones to access chiral sulfinyl compounds

Nature Chemistry, 2023
Shengli Huang, Zhen Zeng, Nan Zhang, Wenling Qin, Y. Lan, Hailong Yan   +5 more
semanticscholar   +1 more source

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