alkoxide in Vietnamese

danh từ
(hóa học) alkoxide

Sentence patterns related to "alkoxide"

1. alkoxide and trifluoromethyl; or NR?

2. Methods of forming a tellurium alkoxide and methods of forming a mixed halide-alkoxide of tellurium

3. At this temperature no alkoxide groups are detected.

4. Deprotonation of the alcohol, forming chloroform, yields an alkoxide 5.

5. The ether then decomposes into an alkene and an alkoxide.

6. Key words: diol, Michael addition, zirconium, synthesis, structure, fluxional, alkoxide, Lewis acid, catalysis.

7. The Hg2+ center binds to alkenes, inducing the addition of hydroxide and alkoxide.

8. Highly reducing metals react directly with alcohols to give the corresponding metal alkoxide.

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9. For a magnesium aluminosilicate sol, preferably the silicon alkoxide is tetraethylorthosilicate, the magnesium alkoxide is selected from the group consisting of magnesium-s-butoxide and magnesium-2-(2'-methoxyethoxy)ethoxide, the aluminum alkoxide is aluminum isopropoxide, the solvent is sec-butanol and 2-(2'-methoxyethoxy)-ethanol and 30 % H¿2?

10. The kinetics of the reactions of cyanide ion and 1,3,5-trinitrobenzene in ethanol and n-propanol are complicated by alcoholysis of cyanide ion which yields the corresponding alkoxide ion and the 1:1 1,3,5-trinitrobenzene–alkoxide ion σ-complex.

11. The invention relates to magnesium alkoxide granulates, a method for the production thereof, and the use thereof.

12. Nickel complexes promoted by alkoxide bases can affect facile conversion of synthesis gas into methanol under thermodynamically favorable temperatures.

13. Hydroxide bases are inexpensive relative to generating an alkoxide or acetylide with reagents such as elemental lithium, sodium, or potassium.

14. A process for the synthesis of Losartan Postassium by reacting Trityl Losartan in a primary alcohol with potassium tertiary alkoxide.

15. Compound1 exhibits surprisingly short Ti-Cl and Ti-O distances, suggesting strong π donation by the chloride and in particular by the alkoxide ligand.

16. For secondary alkoxide ions, where more than one elimination reaction occurs, the energy dependence of fragmentation has been explored over the collision energy range 5 to 100 eV.

17. A catalyst composition comprises the reaction product of an alkoxide or condensed alkoxide of a metal M, selected from titanium, zirconium, hafnium, aluminium, or a lanthanide, an alcohol containing at least two hydroxyl groups, a 2-hydroxy carboxylic acid and a base, wherein the molar ratio of base to 2-hydroxy carboxylic acid is in the range 0.01 - 0.79:1.

18. Said material is prepared by hydrolysing a mixture comprising an alkoxide selected from Zr, Ti or Sn and lithium hydroxide and then drying and sintering the product obtained.

19. 1¿ represents C¿1? to C¿20? hydrocarbyl, m is the valence of M, and m > n » 0) and a titanium alkoxide of the general formula Ti(OR?

20. Molecularly dispersed aluminium alkoxide, precursor of Al2O3, already developed in the EU project CONSTGLASS, was optimised to allow the penetration in the smallest cracks (< 5μm) of corroded glass.

21. The carbon atom that is bonded to Mg transfers to the carbonyl carbon atom, and the oxygen of the carbonyl carbon becomes attached to the magnesium to give an alkoxide.

22. There is also described a process for producing graphene wherein a metal, for example an alkali metal, is reacted with an alcohol to produce a solvothermal product comprising a metal alkoxide.

23. For pH < 9.7, rate-determining attack of ferricyanide ion on the neutral pseudobase predominates, while for pH > 12.8 the predominant oxidation pathway involves reaction of ferricyanide ion with the pseudobase alkoxide ion.

24. The collisionally activated dissociation reactions of the C2 to C5 alkoxide ions have been studied for collisons occurring at 8 keV kinetic energy and also over the range 5 to 100 eV kinetic energy.

25. Provided herein are 5-fluoro-4-imino-3-(alkyl/substituted alkyl)-1-(arylsulfonyl)-3,4-dihydropyrimidin-2(1H)-one and processes for their preparation which may include the use of an alkali alkoxide and an alkylating agent.

26. Anhydrides can be converted into esters by using an alcohol with a base or, even better, an alkoxide which is a stronger nucleophile: In a similar reaction, thioesters can be prepared from Anhydrides: Amides from

27. Catalysts produced by this process, during which the alkylmagnesium alkoxide contacts the reacting components after the transition metal compound is applied, have higher activities when compared with catalysts prepared by known processes under similar conditions.

28. Alopekai aloelike alkylize alkoxide alkamine alkalize alkalise alkaline alkalies aligreek aleikoum alaskite akrteria akinetic akinesis akinesic akinesia akineses akepiros akazgine aircheck aikinite aguelike aflicker afikomen abhiseka Cheswick Brinkley Brickeys Bokeelia Bicknell Bickmore Benedikt Benedick Beckwith Arkville Angelika.

29. In admixtures of goethite with MnCO3 or pyrolusite the main difference from the counterpart alkoxide is shown after heating at 270°C, when the Fe−Mn mineral mixture produces mostly protohematite (disordered hematite) instead of disordered jacobsite resulting from the alkoxides.

30. Like most alcohols, isopropyl alcohol reacts with active metal s such as potassium to form alkoxide s which can be called isopropoxides. The reaction with aluminium (initiated by a trace of mercury ) is used to prepare the catalyst aluminium isopropoxide .

31. Base catalysis is attributed partly to the conversion of the reductants to alkoxide ions at high pH, and partly to the reaction of hydroxide ion with tetraoxoferrate(VI) to give a five-coordinated species, HOFeO43−, that reacts rapidly with nucleophiles.

32. The invention also concerns a method for producing a hafnium oxide layer and hafnium oxynitride layer on an object to be coated, and to a hafnium alkoxide solution containing 30 to 90 % by weight of one or more hafnium alkoxides.

33. The invention provides a method of producing an oxy-Michael adduct comprising allowing a Michael acceptor to react with an alkoxide of an alcohol of formula R10H having a chiral centre at the hydroxy carbon, in the presence of a multidentate ligand.

34. According to the invention, elemental tin is heated with at least n times the molar amount of an alcohol of the general formula ROH, in particular under backflow, and the excess alcohol is separated in order to obtain the corresponding tin alkoxide.

35. MY¿n?, wherein Y represents a didentate alkoxo ligand; M represents a Group IV metal; X represents a halogen or an alkoxide group; and n represents an integer of 1 to 2; a method of preparing thereof; and a method of polymerizing olefin monomers.

36. Two kinds of dispersed nanoparticle photocatalysts of Antimonic acid, HSbO3·nH2O, namely, SbI and SbII, were prepared separately by the direct reactions of an aqueous H2O2 solution with Sb alkoxide complex, Sb(O-i-C3H7)3 and metallic Sb powder according to a soft chemical solution process

37. The 9$g(a)-carbonates are prepared by reaction of the corresponding 9$g(a)-hydroxy steroid with a sequence of excess base, trialkylsilyl chloride, alkyl haloformate and alkanol or by using excess base, alkyl haloformate and alkoxide. 9$g(a)-Carbonate-17-keto compounds can be treated with lithium acetylide and a lithium salt to afford the corresponding 17$g(a)-ethynyl-17$g(b)-hydroxy-9$g(a)-carbonate.

38. Thus, according to the present invention there is provided a method for making a substantially pure higher MW phenylalkylsiloxane from a lower MW phenylalkylsiloxane by polymerisation of the lower MW phenylalkylsiloxane under vacuum in the presence of an aqueous alkaline solution containing one or more alkalis selected from the group of potassium hydroxide, magnesium hydroxide, calcium hydroxide, rhubidium hydroxide ammonium hydroxide, tetraalkylammonium hydroxide, tetraalkyl ammonium alkoxide and phosphonium hydroxides in an amount of from 50ppm or greater based upon the amount of lower MW phenylalkylsiloxane.

39. The invention relates to a process for the preparation of flowable, pulverulent alkoxycarbonylaminotriazine from an alcoholic reaction mixture produced during the preparation of alkoxycarbonylaminotriazines and comprising at least one alkoxycarbonylaminotriazine, at least one cyclic and/or acyclic carbonic acid ester, at least one C1-C13-alkanol optionally containing one or two oxygen atoms as ether bond and optionally substituted by C1-C4-alkyl and/or hydroxy, and at least one alkali metal or alkaline earth metal alkoxide, optionally melamine and optionally catalyst, where the reaction mixture is atomized and dried in a spray-dryer.

40. The methods include (i) depositing a primer layer having a coefficient of thermal expansion of 300 to 600 μm/mino°C measured at a temperature range below the glass transition temperature of the primer layer, wherein the primer layer has a film thickness of at least 1 micron and is formed from a thermoplastic acrylic composition, and (ii) depositing the hard coat over at least a portion of the primer layer, wherein the hard coat has a thickness of at least 2 μm and is formed from a composition comprising an alkoxide.

41. This invention provides a class of cyclic silylureas and a process of preparing them, which process comprises reacting a cyclosilazane with an isocyanate containing moiety; a class of cyclosilazanes and process for making them, which process comprises heating an aminoalkylalkoxysilane in the presence of a basic catalyst at a temperature less than 100 °C at subatmospheric pressure; and aminoalkylalkoxysilanes and a process for making them, which process comprises reacting a nitrile and a vinylsilane while heating in the presence of a base selected from the group consisting of (a) an alkali metal, (b) alkali metal alkoxide, (c) an alkali metal amide, (d) an alkali metal hydride and (e) mixtures thereof to form a reaction product which is subsequently hydrogenated.

42. What is described is a process for preparing 2-hydroxyacetals of the general formula in which R1 is hydrogen, a branched or unbranched C1-C12-alkyl radical, an electron-deficient, halogen-, NO2-, CN-, CF3-, acyl group- or branched or unbranched alkyl group-substituted or unsubstituted C5-C6-aryl or heteroaryl, and R2 is a branched or unbranched C1-C5-alkyl radical, or both R2 radicals are bonded directly to one another or to one another via a C1-C4 unit, by reacting an enol compound of the general formula (II) in which R3 is the same and R1 is as defined for formula (Ia), with bromine to give the corresponding dibromo adduct and then reacting this dibromo adduct with an alkoxide of the general formula (III) M-O-R2 (III) in which R2 is as defined for formula (Ia) and O is oxygen and M is lithium, sodium or potassium.

43. The present invention relates to a fluid phase method for producing indium oxide-containing layers, in which a composition comprising at least one indium oxo-alkoxide of the generic formula MxOy(OR)z[O(R'O)eH]aXbYc[R"OH]d with x = 3 - 25, y = 1 - 10, z = 3 - 50, a = 0 - 25, b = 0 - 20, c = 1 - 20, d = 0 - 25, e = 0, 1, M = In, R, R', R" = organic remainder, X = F, Cl, Br, I, and Y = -NO3, -NO2, where b + c is = 1 - 20 and at least one solvent is applied to a substrate, optionally dried, and converted into an indium oxide-containing layer, to the indium oxo-alkoxides of the indicated generic formula, to coating compositions comprising said indium oxo-alkoxides, to layers that can be produced by means of the method according to the invention, and to the use of said layers.