Results 201 to 210 of about 45,088 (258)
Some of the next articles are maybe not open access.
Acta Crystallographica Section C Crystal Structure Communications, 2008
Four neutral vinyl sulfones, two of which are paired with phosphonate groups, are described. The compounds are diisopropyl (2-phenylethenylsulfonylmethyl)phosphonate, C(15)H(23)O(5)PS, (I), diisopropyl {[2-(7-methoxy-1,3-benzodioxol-5-yl)ethenylsulfonyl]methylsulfonylmethyl}phosphonate, C(18)H(27)O(10)PS(2), (II), bis(trans-2-phenylethenyl) sulfone, C ...
Jessica H, Wong +3 more
openaire +2 more sources
Four neutral vinyl sulfones, two of which are paired with phosphonate groups, are described. The compounds are diisopropyl (2-phenylethenylsulfonylmethyl)phosphonate, C(15)H(23)O(5)PS, (I), diisopropyl {[2-(7-methoxy-1,3-benzodioxol-5-yl)ethenylsulfonyl]methylsulfonylmethyl}phosphonate, C(18)H(27)O(10)PS(2), (II), bis(trans-2-phenylethenyl) sulfone, C ...
Jessica H, Wong +3 more
openaire +2 more sources
Synthesis of nucleoside sulfonates and sulfones
Tetrahedron Letters, 1991Abstract Sulfonate analogues of adenine, cytidine and guanine monophosphates have been synthesized for the first time. The synthesis of ribose 3-sulfonate, a synthesis of sulfonyl disaccharides and dinucleotides and an improved synthesis of a ribose 3-sulfone is also reported.
Branislav Musicki, Theodore S. Widlanski
openaire +1 more source
Synthesis of carbohydrate sulfonates and sulfonate esters
The Journal of Organic Chemistry, 1990La reaction d'esters α-lithio sulfonates avec des hydrures de carbohydrates primaires est une voie simple de synthese de sulfonates-analogues de phosphates hydrocarbones importants comme le glucose 6-phosphate, le ribose 5-phosphate et l'uridine 5-phosphate.
Branislav Musicki, Theodore S. Widlanski
openaire +1 more source
Amphiphilic perfluoroalkylated sulfones and sulfonate betaines
Journal of Fluorine Chemistry, 2007Abstract Two types of perfluoro alkyl-containing amphiphilic sulfones 7 – 9 and 13 – 15 , respectively, and sulfonate betaines 23 – 32 were prepared using 2-[(perfluoroalkyl)methyl]oxiranes ( 1–3 , R F = C 4 F 9 , C 6 F 13 , C 8 F 17 ) or 3-(perfluoroalkyl)propyl iodides ( 16 and 17 , R F = C 6 F 13 , C 8 F 17 ) as the starting compounds ...
Robert Kaplánek, Oldřich Paleta
openaire +1 more source
Spontaneous Oxidation of Aromatic Sulfones to Sulfonic Acids in Microdroplets
Journal of the American Society for Mass Spectrometry, 2022Reactions in microdroplets can be accelerated and can present unique chemistry compared to reactions in bulk solution. Here, we report the accelerated oxidation of aromatic sulfones to sulfonic acids in microdroplets under ambient conditions without the addition of acid, base, or catalyst.
Lingqi Qiu +2 more
openaire +2 more sources
Recueil des Travaux Chimiques des Pays-Bas, 1964
AbstractThe sulfonation of benzene and toluene with sulfur trioxide without solvent has been studied extensively.With benzene at low conversion benzenesulfonic acid and diphenylsulfone are the only products. At 25° the sulfone: sulfonic acid ratio changes from 0.2 to 0.6 on varying the SO3 : C6H6 ratio from 0.13 to 1.3.
H. Cerfontain, A. Telder, L. Vollbracht
openaire +1 more source
AbstractThe sulfonation of benzene and toluene with sulfur trioxide without solvent has been studied extensively.With benzene at low conversion benzenesulfonic acid and diphenylsulfone are the only products. At 25° the sulfone: sulfonic acid ratio changes from 0.2 to 0.6 on varying the SO3 : C6H6 ratio from 0.13 to 1.3.
H. Cerfontain, A. Telder, L. Vollbracht
openaire +1 more source
The metabolism of the surfactants dodecyl sulfonate and hexadecyl sulfonate in the rat
Toxicology and Applied Pharmacology, 1978Abstract 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 ...
A J, Taylor +3 more
openaire +2 more sources
Dioxygen mediated hydroacylation of vinyl sulfonates and sulfones on water
Chem. Commun., 2010Herein we report a mild, facile method for the preparation of 1,4-keto-sulfonates and sulfones on water. Further synthetic manipulations can result in products that are not readily accessed by hydroacylation of electron rich alkenes.
Vijay, Chudasama +3 more
openaire +2 more sources
The polysulfonylamines bis(methylsulfonamido) sulfone and bis(trifluoromethylsulfonamido) sulfone
Acta Crystallographica Section C Crystal Structure Communications, 2003Bis(methylsulfonamido) sulfone, C(2)H(8)N(2)O(6)S(3) or SO(2)(NHSO(2)CH(3))(2), was synthesized from imidobis(sulfonyl chloride), HN(SO(2)Cl)(2), and bis(trimethylsilyl)methane, CH(2)[Si(CH(3))(3)](2), in chlorotrimethylsilane solution. In the solid state, there are two independent molecules linked by two N-H...O hydrogen bridges into infinite chains ...
Jan, Taraba, Zdirad, Zák
openaire +2 more sources