نتایج جستجو برای: triorganotin chloride
تعداد نتایج: 87815 فیلتر نتایج به سال:
abstract: since sugar consumption is directly related to diabetes and other illnesses such as obesity, the issue that will most heavily dominate the health food market is blood sugar management and low glycemic foods. using calcium chloride and gums such as sodium alginate and low ester pectin as thikener and a high-potency sweetener aspartame we were able to reduce sugar content of sour cherry...
and ESI, in which [M + H]+ were not observed or the spectra were complicated. The liquid ionization mass spectra of triorganotin carboxylates varied with solvents and sample concentrations. For instance, the fragment ions [M + (C4H9)3Sn]+ of dimeric ions were observed with chloroform used as a solvent, while the [M + H]+ were observed as the base peak using ethylene dichloride. Spectra useful f...
we describe here a suitable approach for the synthesis of n-unsubstituted monocyclic b-lactams under mild reaction conditions by the annelation of imines with substituted acetylchlorides. in this method the reaily available phtalimidoacetyl chloride were allowed to react with - dibenzylideneiminotoluene (hydrobenzamide) in the presence of an equimolar amount of triethylamine in refluxing toluen...
A series of mono-, di- and triorganotin compounds with general formulae [RSnL(2)Cl], R = Bu (compound 3), [R(2)SnL(2)], where R = Me, Et, Bu, Oct (compounds 1, 2, 4 and 6) and [R(3)SnL], where R = Bu, Cy and Ph (compounds 5, 7 and 8) and where L = 3,4-methylenedioxy-6-nitrophenylpropenoic acid have been prepared and characterized by elemental analysis, multinuclear ((1)H-, (13)C- and (119)Sn-) ...
The reaction of R2Sn(OH)OSO2Me [R = n-Pr (1a), or N-BU (1b)] with one equivalent of Bu4NNO3 in CH2Cl2 proceeds via nucleophilic addition of NO3 ~ ion to the Lewis acidic tin center and results in the formation of novel diorganostannates, [R2Sn(lOH)(OSO2Me)(ONO2)]22Bu4N [R = n-Pr (2a), n-Bu(2b)]. The molecular structure of 2b comprises of hydroxy-bridged dimer with monodentate methanesulfonate a...
The Sn atom in the title polymeric compound, [Sn(C(7)H(7))(3)(C(8)H(12)NO(2)S(2))](n), exists in a trans-C(3)O(2) trigonal-bipyramidal coordination environment in the two independent formula units. The carboxyl-ate moiety functions in a bridging mode, linking adjacent triorganotin cations into a linear chain running along the shortest axis of the triclinic unit cell; the repeat distance of the ...
In previous studies we have demonstrated that two derivatives of meso-Tetra(4-sulfonatophenyl)porphine (TPPS), (Bu2Sn)2TPPS and (Bu3Sn)4TPPS, cause apoptotic death of A375 melanoma cells and, at lower concentrations, arrest of cell proliferation. In the present study, we examined if the manganese metal inside the porphyrin cavity could improve the efficacy of this class of compounds. Thus, [mes...
Organotin(IV) compounds have gained significant interest in both the chemical and pharmaceutical industry. This research concentrates on synthesis of di tri-organotin complexes with mefenamic acid characterized different techniques such as elemental analysis, FTIR, proton carbon NMR. The anti-oxidant properties were assessed using 1,1-diphenyl-2-picrylhydrazyl, DPPH CUPRAC Method . complexes' s...
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