نتایج جستجو برای: tert butyl hydroperoxide
تعداد نتایج: 21931 فیلتر نتایج به سال:
The new cis-dioxomolybdenum (VI) complexes [MoO2(L2)(H2O)] (2) and [MoO2(L3)(H2O)] (3) containing the tridentate hydrazone-based ligands (H2L2 = N'-(3,5-di-tert-butyl-2-hydroxybenzylidene)-4-methylbenzohydrazide H2L3 N'-(2-hydroxybenzylidene)-2-(hydroxyimino)propanehydrazide) have been synthesized characterized via IR, 1H 13C NMR spectroscopy, mass spectrometry, single crystal X-ray diffraction...
In this study, stable lattices of terpolymer butyl acrylate, methyl methacrylate, and styrene were synthesized by a mini-emulsion polymerization technique using tert-butyl hydroperoxide TBHP/Fe2 /ethylenediaminetetraacetic acid/sodium formaldehyde sulfoxylate redox initiators at room temperature, and the kinetics of the reaction were studied. The reaction rate was obtained from periodic samplin...
Abstract The epoxidation reaction of the vegetable oil derivative methyl oleate with tert-butyl hydroperoxide in presence amorphous Ti–SiO 2 catalysts prepared by different methods using various silica sources was carried out. conditions were optimized. relation between properties such as specific surface area well titanium dispersion and catalytic performance focus investigation. Based on resu...
Silver/manganese dioxide (Ag@MnO 2 ) nanorods are synthesized and characterized by scanning electron microscopy, transmission energy dispersive X-ray spectroscopy, powder diffraction, photoelectron spectroscopy. It was discovered that Ag@MnO can realize hydrogen-borrowing reactions in high yields also effective for the synthesis of tert-butyl esters from aryl cyanides hydroperoxide a short peri...
Functionalized cavitands have been shown to self-fold via coordination of Fe(II) salts and effect catalytic C-H oxidation reactions of unfunctionalized alkanes under mild aqueous conditions in the presence of tert-butyl hydroperoxide as co-oxidant. Secondary and tertiary C-H bonds can be converted to ketones and alcohols, respectively, and ethers can be converted to esters. The cavitands retain...
We present the synthesis, properties, and biological applications of Peroxyfluor-1 (PF1), a new type of optical probe for intracellular imaging of hydrogen peroxide in living biological samples. PF1 utilizes a boronate deprotection mechanism to provide unprecedented selectivity and optical dynamic range for detecting H2O2 in aqueous solution over similar reactive oxygen species including supero...
The tert-butyl hydroperoxide (TBHP) promoted sequential silylation and aromatisation of isonitriles was developed, where the silyl group was regioselectively installed at the 6-position of phenanthridines. This procedure tolerates a series of functional groups, such as fluoro, chloro, acetyl, methoxy carbonyl, cyano and trifluoromethyl. The addition of a silyl radical to the isonitrile followed...
The changes in mitochondrial membrane potential (Deltapsi(m)) were used as an indicator for evaluating the mitochondrial permeability transition pore (MPTP) function. We found that in situ mitochondria in digitonin-permeabilized hepatocytes were coupled and responded to the addition of substrates, inhibitors and uncouplers. Ca(2+)-induced Deltapsi(m) dissipation was caused by MPTP opening becau...
An assisted tandem catalytic transformation of diallyl amines and diallyl ethers into N-aryl pyrroles and furans, respectively, is described. The sequence relies on ring closing metathesis followed by dehydrogenation of the initially formed dihydropyrroles and dihydrofurans. Both steps are Ru-catalyzed, but the sequence requires only one precatalyst, because conversion of the metathesis catalys...
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