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Bryce M Whited et al.
Journal of biomaterials science. Polymer edition, 17(4), 403-418 (2006-06-14)
Several minerals, such as hydroxyapatite and beta-tricalcium phosphate, have been incorporated into bioresorbable polyester bone scaffolds to increase the osteoconductivity both in vitro and in vivo. More soluble forms of calcium phosphate that release calcium and phosphate ions have been
A Z El-Sonbati et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 58(7), 1411-1424 (2002-06-27)
Some binary and ternary novel complexes of dioxouranium(VI) with 5-vinylsalicylaldehyde (VSH) have been prepared and characterized by various physico-chemical techniques. The amine exchange reactions of coordinated poly-Schiff bases in these complexes have been also carried out which give symmetrical tetradentate
E Vassileva et al.
Fresenius' journal of analytical chemistry, 370(1), 52-59 (2001-06-08)
A flow-injection analysis (FIA) system incorporating a micro-column of ZrO2 has been used for the development of an on-line multi-element method for the simultaneous preconcentration and determination of Al, Bi, Cd, Co, Cr, Cu, Fe, Ga, In, Mn, Mo, Ni
Yongjuan Chen et al.
PloS one, 10(1), e0113426-e0113426 (2015-01-21)
Zirconium (Zr) is an element commonly used in dental and orthopedic implants either as zirconia (ZrO2) or in metal alloys. It can also be incorporated into calcium silicate-based ceramics. However, the effects of in vitro culture of human osteoblasts (HOBs)
Zirconium(IV) chloride as versatile catalyst for the expeditious synthesis of quinoxalines and pyrido[2,3-b]pyrazines under ambient conditions
Aghapoor K, et al.
Transition Metal Chemistry, 35(1), 49-53 null
Lutz Ackermann et al.
Organic & biomolecular chemistry, 5(12), 1975-1978 (2007-06-07)
Two distinct economical catalysts for intramolecular hydroaminations of electronically unactivated alkenes with basic amines are described, which are based on (a) group 4 metal halides under basic reaction conditions or (b) Brønsted-acid organocatalysts.
Yun-Yang Wan et al.
International journal of biological macromolecules, 47(1), 76-81 (2010-04-07)
The purified polysaccharides, glycoproteins, and isoenzymes of Rhus laccase, and crude enzymes, from Chinese lacquer (Rhus vernicifera sap) were used to determine their influence on the enzymic activity of Rhus laccase on several substrates (4-phenylenediamine, isoeugenol and coniferyl alcohol). No
Aldrichimica Acta, 18, 31-31 (1985)
Ahmed Kamal et al.
Bioorganic & medicinal chemistry letters, 21(1), 350-353 (2010-12-15)
An efficient one-pot iodination methodology for the synthesis of benzothiazolo-4β-anilino-podophyllotoxin (5a-h) and benzothiazolo-4β-anilino-4-O-demethylepipodophyllotoxin (6a-h) congeners has been successfully developed by using zirconium tetrachloride/sodium iodide. Interestingly, this protocol demonstrates enhancement of stereoselectivity apart from the improvement in the yields in comparison
Xiaoyin Xiao et al.
Langmuir : the ACS journal of surfaces and colloids, 27(15), 9484-9489 (2011-06-28)
We used positively charged lipids to prepare lipid bilayer assemblies (LBAs) upon which we assembled negatively charged gold nanoparticles (AuNPs). Treatment of the assembly with zirconium chloride resulted in the formation of nanorings of the diameters inversely related to the
Tian-Yi Ma et al.
Small (Weinheim an der Bergstrasse, Germany), 7(13), 1827-1837 (2011-05-17)
Ordered, hexagonal, mesoporous metal (Ti, Zr, V, Al)-phosphonate materials with microporous crystalline walls are synthesized through a microwave-assisted procedure by using triblock copolymer F127 as the template. Corresponding metal chlorides and ethylene diamine tetra(methylene phosphonic acid) are chosen as the
Young Soo Ko et al.
Journal of nanoscience and nanotechnology, 10(1), 180-185 (2010-04-01)
The effect of nanopore in mesoporous materials confining (n-BuCp),ZrCl2 and methylaluminoxane (MAO) on ethylene-1-hexene and ethylene-1-octene copolymerization was investigated on the basis of the copolymerization results, and the analysis of the supported catalyst and the copolymers. SBA-15 and MCM-41 together
Surendra Singh et al.
The Journal of organic chemistry, 74(15), 5758-5761 (2009-07-04)
The ZrCl4-catalyzed deprotection of 1,3-dioxane/dioxalane and the simultaneous formation of 6-methoxy-substituted tetrahydropyrans proceeded under microwave irradiation in good yield. This synthetic methodology was used for the asymmetric synthesis of (+)-exo- and (+)-endo-brevicomin in 55% overall yield over 4 steps.
A facile zirconium(IV) chloride catalysed selective deprotection of t-butyldimethylsilyl (TBDMS) ethers
Sharma GVM, et al.
Tetrahedron Letters, 44, 4689-4691 (2003)
Denton, S.M. Wood, A.
Synlett, 55-55 (1999)
Stefania Fioravanti et al.
Organic & biomolecular chemistry, 10(41), 8207-8210 (2012-09-26)
ZrCl(4) was found to be an ideal catalyst to promote aza-Henry reactions between trifluoromethyl aldimines and some nitro alkanes giving new fluorinated β-nitro amines. The reaction is strongly influenced by the CF(3) group, the yield by the alkyl chain of
Thomas A Dineen et al.
Journal of the American Chemical Society, 128(50), 16406-16409 (2006-12-15)
Two protocols for the transamidation of primary amides with primary and secondary amines, forming secondary and tertiary amides, respectively, are described. Both processes employ N,N-dialkylformamide dimethyl acetals for primary amide activation, producing N'-acyl-N,N-dialkylformamidines as intermediates, as widely documented in the
Takashi Toyao et al.
ChemSusChem, 8(22), 3905-3912 (2015-09-24)
Various N-doped nanoporous carbons containing metal species were prepared by direct thermal conversion of zeolitic imidazolate frameworks (ZIFs; ZIF-7, -8, -9, and -67) at different temperatures (600, 800, and 1000 °C). These materials were utilized as bifunctional acid-base catalysts to promote
Ilanit Doron-Mor et al.
Langmuir : the ACS journal of surfaces and colloids, 20(24), 10727-10733 (2004-11-17)
Coordination self-assembly of bishydroxamate-based metal-organic multilayers on gold employing a layer-by-layer (LbL) approach was investigated. It is shown that the solution chemistry of the participating metal ion has a marked influence on the composition and properties of the multilayers. Use
Eagleson M
Concise Encyclopedia Chemistry null
Giles W Theaker et al.
Dalton transactions (Cambridge, England : 2003), (48)(48), 6883-6885 (2008-12-04)
A group of readily available zirconium catalysts incapable of ethene-co-styrene polymerization are remarkably active and selective for the production of the new polymer ethene-co-tert-butylstyrene via a single site mechanism.
Harish Kumar et al.
Ultrasonics sonochemistry, 15(2), 129-132 (2007-04-17)
Sonication of aromatic aldehydes, urea and ethyl acetoacetate in presence of solvent (ethyl alcohol) or solvent-less dry media (bentonite clay) supported-zirconium (IV) chloride (ZrCl(4)) as catalyst at 35 kHz gives 6-methyl-4-substitutedphenyl-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylic acid ethyl esters proficiently in high yields.
Zirconium(IV) Chloride - Catalysed Reaction of Indoles: An Expeditious Synthesis of Bis(indolyl)methanes
Nagawade RR, et al.
Bull. Korean Chem. Soc., 26(12) (2005)
Aldrichimica Acta, 18, 31-31 (1985)
Yasuhiro Torisawa et al.
Bioorganic & medicinal chemistry, 11(10), 2205-2209 (2003-04-26)
We have surveyed the utility of Beckmann rearrangement for the conversion of indanones into carbostyrils. Initial attempts at the conversion of 6-methoxy indanone oxime under classical conditions resulted in the formation of the two unusual products: 2-sulfonyloxyindanone and the dimeric
Fouad Albaaj et al.
Drugs, 63(6), 577-596 (2003-03-27)
Hyperphosphataemia is prevalent among chronic renal failure and dialysis patients. It is known to stimulate parathyroid hormone and suppress vitamin D3 production, thereby inducing hyperparathyroid bone disease. In addition, it may independently contribute to cardiac causes of death through increased
Direct amide coupling of non-activated carboxylic acids and amines catalysed by zirconium(IV) chloride.
Helena Lundberg et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 18(13), 3822-3826 (2012-03-01)
Abed Al Aziz Quntar et al.
The Journal of organic chemistry, 71(2), 730-733 (2006-01-18)
[reaction: see text] The reagent system Cp2ZrCl2/2EtMgBr/2AlCl3 converts 1-alkynylphosphonates into cyclopropylmethylphosphonates 3 in good isolated yields. Ethers, chlorides, and other cyclopropyl groups are compatible with the reaction conditions. Deuterium labeling is consistent with the formation of stable cyclopropylmethylbimetallic phosphonates by
Direct Amide Coupling of Non-activated Carboxylic Acids and Amines Catalysed by Zirconium(IV) Chloride
Lundberg H, et al.
Chemistry (Weinheim An Der Bergstrasse, Germany), 18(13), 3822-3826 null
Yajuan Yang et al.
Carbohydrate research, 345(1), 148-153 (2009-11-13)
Zirconium sulfophenyl phosphonate (ZrSP), Zr(O(3)P-C(6)H(4)SO(3)H)(2), was synthesized and characterized to prepare nanocomposites based on chitosan (CS). The effects of ZrSP on the structure, morphology, and thermal properties, as well as the mechanical properties of the films were investigated by Fourier-transform
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