نتایج جستجو برای: alcl3
تعداد نتایج: 767 فیلتر نتایج به سال:
The addition of AlCl3 to four-coordinate boranes of the general formula (C-N-chelate)BCl2 results in halide abstraction and formation of three-coordinate borenium cations of the general formula [(C-N-chelate)BCl]+. The latter react with both arylstannanes and arylsilanes by boro-destannylation and -desilylation, respectively, to form arylated boranes. Catalytic quantities of AlCl3 were sufficie...
This paper reports the results of flavonoids determination expressed in rutin from marine algae. For this purpose, rutin and rutin AlCl3 complexes were spectrophotometrically studied in three domains of ligand concentrations: ligand Crut=1.34-6.7mg/L, 4-20mg/L and 2-32mg/L. The precision, accuracy, specificity, and the quantification limit of the method were verified. The calibration curve trac...
Carboxylation of aromatics by CO2 to generate corresponding carboxylic acids is recently providing a novel approach to utilize the green gas CO2, in which the activation of CO2 is the key procedure. Among the many catalytic systems employed in the carboxylation, the concept of “Frustrated Lewis Pairs” (FLPs) was scarcely mentioned, which perform excellently in activating small molecules like CO...
Combined with the practical experience of wastewater treatment plant, the chemical coagulants have inhibition effects on microorganism activity, with the influence degree of PAC (polyaluminium chloride) > AlCl3> Fe2(SO4)3. In synchronization dephosphorization, the inhibition rates of PAC in 10 ppm and 20 ppm are 11.9% and 33% respectively; while the inhibition rates of AlCl3 and Fe2(SO4)3 in 20...
The aim of this study was to investigate the protective effects of taurine against histomorphological and ultrastructural changes in the testes of Swiss albino mice caused by acute in vivo exposure to AlCl3. Light microscopy revealed that a single intraperitoneal (i.p.) dose of AlCl3 (25 mg kg(-1) Al(3+)) was associated with sloughing, tubular atrophy, germ-cell degeneration, and foci of Leydig...
Ionic liquid based systems are used to facilitate the cationic polymerization of isobutylene conventional grade polyisobutylene (PIB) using AlCl3 as an initiator. Specifically, compound 1-butyl-3-methylimidazolium chloride (IL) is employed a reference system due its simplicity, well polyionic (PIL), prepared via radical 1-butyl-3-vinylimidazolium chloride, and halloysite clay (Hal) supported io...
Objective Metals can cause male infertility through affection of spermatogenesis and sperm quality. Strong evidences confirm that male infertility in metal-exposed humans is mediated via various mechanisms such as production of reactive oxygen species (ROS). Flavonoids have antioxidant and metal chelating properties which make them suitable candidates for neutralizing adverse effects of metals ...
Greatly enhanced microporosity is obtained for the amorphous porous polymers produced from the AlCl3-mediated coupling of aromatic hydrocarbons by using dichloromethane as the reaction solvent. A polymer of average BET surface area 1⁄4 2435 m g 1 was obtained reproducibly from 1,3,5-triphenylbenzene with the additional porosity being provided as ultramicroporosity as demonstrated by very high C...
A novel and unprecedented formation of η(4)-(vinylketene)iron complexes from η(4)-(diene)iron complexes is described herein. Treatment of η(4)-(diene)iron complexes with a Lewis acid such as GaCl3 or AlCl3 in the presence of aromatic compounds under a CO atmosphere affords η(4)-(vinylketene)iron complexes via electrophilic aromatic substitution.
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