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Longer titles found: Silicon alkoxide (view), Transition metal alkoxide complex (view)

searching for Alkoxide 117 found (240 total)

alternate case: alkoxide

Niobium(V) ethoxide (459 words) [view diff] exact match in snippet view article

Metal alkoxides rarely adopt monomeric structures, and niobium(V) ethoxide is no exception. Early studies established that niobium alkoxides aggregate

hardness of the borohydride is increased by replacing hydride groups with alkoxide groups, a reaction catalyzed by the cerium salt by increasing the electrophilicity

readily. It is used to prepare films of tantalum(V) oxide. Tantalum(V) alkoxides typically exist as dimers with octahedral six-coordinate tantalum metal

the alkoxide generates a carboxylic acid: The alkoxide ion is a strong base so the proton is transferred from the carboxylic acid to the alkoxide ion

sulfonamide followed by a 1,2-hydride migration to give the alkoxide (3). The collapse of the alkoxide results in the fragmentation producing the desired aldehyde

progress of red rot can be stopped or slowed with a treatment of aluminium alkoxide solution, which increases the pH value and becomes (in the presence of

For example, deprotonation of an alcohol forms the negatively charged alkoxide, which is a much stronger nucleophile. To determine whether or not a given

borate is the organoboron compound with the formula B(OCH3)3 and a metal alkoxide. It is a colourless liquid that burns with a green flame. It is an intermediate

determining step of the reaction is de-protonation of the hydrazone by an alkoxide base to form a diimide anion by a concerted, solvent mediated protonation/de-protonation

example, when a 3° haloalkane is reacts with an alkoxide, due to strong basic character of the alkoxide and unreactivity of 3° group towards SN2, only

Acetylenediol, or ethynediol, is a chemical substance with formula HO−C≡C−OH (an ynol). It is the diol of acetylene. Acetylenediol is unstable in the condensed

malonate and the alcohol, while other alkoxide salts will cause scrambling by transesterification. Only the "same" alkoxide anion as the one that one used to

AlClEt2 Triethylgallium readily converts to the air-stable, colorless alkoxide by two routes, oxidation and alcoholysis: GaEt3 + 0.5 O2 → GaEt2(OEt) GaEt3

corresponding α-haloketones through a 1,2-rearrangement, with the use of an alkoxide. Aston, J. G.; Greenburg, R. B. (1942). "alpha-Bromo Secondary Alkyl Ketones

after the first aldol addition, a second aldol adds to form a hemiacetal alkoxide. Then the rate-determining proton transfer releases the adduct A via a

only shows the rearranged product 5 but not 4 after trapping the lithium alkoxide with trimethylsilyl chloride. This result rules out a radical-ketyl intermediate

π-allyliridium precatalyst to generate the iridium alkoxide I. β-Hydride elimination of alkoxide I generates the aldehyde, which dissociates to form

alcohol, forming chloroform, yields an alkoxide 5. The nucleophilic displacement of the chloride by the alkoxide yields intermediate 7. With primary and

proceeds via the formation of copper-aryl complexes. A copper(III)-aryl-alkoxide or copper(III)-aryl-amide intermediate undergoes Reductive elimination

 115. ISBN 9783642282195. Ogata, Y; Kawasaki, A (1969). "Alkoxide transfer from aluminium alkoxide to aldehyde in the Tishchenko reaction". Tetrahedron.

intermediate. The [CF3]− attacks the carbonyl to generate an alkoxide anion. The alkoxide is silylated by the reagent to give the overall addition product

epoxy alcohol isomer. Intramolecular electrophilic trapping of the new alkoxide generated upon rearrangement may also be used to drive the reaction to

biodegradable polymers. An example of this work is the use of Zn(II) or Fe(III) alkoxide catalysts, which can polymerize lactide (LA) into polylactic acid (PLA)

C2 hydroxyl group, forming an alkoxide. The zinc atom further serves to stabilize the negative charge on the alkoxide intermediate before the excess

or related derivatives. The reaction consumes one equivalent of metal alkoxide. Commonly, diethylsuccinate is a component of the reaction. The usual product

to alcohols. These reductions proceed in two stages, formation of the alkoxide followed by hydrolysis: NaBH4 + 4 R2C=O → NaO−CHR2 + B(O−CHR2)3 NaO−CHR2

were first produced by reaction of 1,1,1-trichloroalkanes with sodium alkoxide: RCCl3 + 3 NaOR′ → RC(OR′)3 + 3 NaCl Compounds with an adjacent hydrogen

halogen exchange with antimony pentafluoride. The aluminate derived from its alkoxide anion, tetrakis[1,1,1,3,3,3-hexafluoro-2-(trifluoromethyl)propan-2-oxy]aluminate(1–)

to date.[when?] Potassium alkoxides eliminate quickly, while sodium alkoxides generally require heating. Magnesium alkoxides only eliminate in extreme

example), the resulting alkoxide reacts further to afford unexpected products. Straightforward β-elimination of the alkoxide leads to the formation of

believed acetone to be an alcohol which he hoped to prove by forming a metal alkoxide salt. The reaction product he obtained instead he called paraceton which

diastereoselectivity is due to the intermediate formation of a trichlorotitanium alkoxide making possible an easy delivery of chlorine to the carbocation ion from

etherifications, etc. of aryl halides), the conversions involve copper(I) alkoxide, copper(I) amides, copper(I) thiolates. The copper(I) reagent can be generated

effected in two steps: delivery of the hydride equivalent to give the lithium alkoxide followed by hydrolytic workup: R2CO + Li[(CH3CH2CH(CH3))3BH] → R2CHOLi

the alcohol (generally in fact a phenol) is dissolved in the form of an alkoxide in an aqueous sodium hydroxide solution, the acyl chloride in an organic

formation of a deprotio-metallacyclobutadiene and concomitant loss of one alkoxide ligand. This reaction course remains viable for the new alkylidynes with

rearrangements, the α-ketol rearrangement involves the transformation of an alkoxide into a carbonyl group with concomitant movement of the bonding electrons

reaction between esters and Grignard reagents in presence of a titanium alkoxide. The Bingel reaction is a specialised cyclopropanation reaction used to

reaction between esters and Grignard reagents in presence of a titanium alkoxide. The Bingel reaction is a specialised cyclopropanation reaction used to

reported for "La(acac)3". It can be prepared by the reaction of lanthanum alkoxide and acetylacetone. Its tetrahydrate decomposes into monohydrate at 110 °C

[60142-94-1] (3). Treatment of the monoacid with potassium hydroxide gave the alkoxide (4). Treatment with bromine in the presence of tetrachloromethane gave

LnMCO2−. Metallacarboxylate esters (LnMCO2R) arise by the addition of alkoxide to metal carbonyl: [LnM-CO]+ + ROH → [LnM-CO2R] + H+ Metallacarboxylic

Characterisation of Silverpolyfluoroalkoxyaluminates AgAl(ORF)4, Calculation of the Alkoxide Ion Affinity". Chemistry – A European Journal. 7 (2): 490–502. doi:10

lithium ethyl propiolate to which cyclopentanone is added forming a lithium alkoxide. Acetic acid is added to remove lithium and liberate the free alcohol.

η1-coordinated phosphaalkyne complex trans–[RuH(P≡CSiPh3)(dppe)2]+ with an alkoxide resulted in desilylation, followed by subsequent rearrangement to the corresponding

Neodymium(III) acetylacetonate can be obtained by treating a neodymium alkoxide with acetylacetone, or by electrolysis of neodymium in acetylacetone. Pierson

oxyplumbation, organolead alkoxides are added to polar alkenes: H2C=CH-CN + (Et3PbOMe)n → MeO-CH2-HC(PbEt3)-CN → MeO-CH2-CH2-CN The alkoxide is regenerated in

Classic pi-donor ligands are oxide (O2−), nitride (N3−), imide (RN2−), alkoxide (RO−), amide (R2N−), and fluoride. For late transition metals, strong pi-donors

corresponding 2-pyridinethiol ester, and after a proton transfer, the alkoxide attacks the carbonyl carbon, forming a tetrahedral transition state, before

CH2CH2O + AlCl3 → C6H5CH2CH2OAlCl2 + HCl The reaction affords the aluminium alkoxide that is subsequently hydrolyzed to the desired product. The main side product

hydroxide or ammonia, and can also be obtained by the hydrolysis of yttrium alkoxide. Hydroxy acids and sugars present in the solution will prevent the formation

"Deposition of HfO2 and ZrO2 films by liquid injection MOCVD using new monomeric alkoxide precursors". Journal of Materials Chemistry. 15 (19): 1896. doi:10.1039/B417389A

methyl iodide to afford the 4,4-dimethyl derivative. Formylation with alkoxide and methyl formate leads to the 2-hydroxymethyl derivative. Reaction of

another nucleophilic addition does not occur. Upon acidic workup, the alkoxide is protonated to give 4, then the amine is protonated to give 5. Elimination

of hexachlorophosphazene followed by substitution of the P−Cl groups by alkoxide. Such materials find specialized applications as elastomers. Boron–nitrogen

A second equivalent will attack the carbonyl group to create a geminal alkoxide dianion, which is protonated upon workup to give the hydrate of a ketone

from their ability to act as both a Brønsted base by virtue of the metal alkoxide and a Lewis acid via the lanthanide ion. Enantioselectivity has been found

"Demonstration by 2H ENDOR spectroscopy that myo-inositol binds via an alkoxide bridge to the mixed-valent diiron center of myo-inositol oxygenase". Journal

Devon W. (March 1989). "Synthesis, characterization and reactivity of alkoxide and hydroxide complexes of rhodium(I) and iridium(I)". Organometallics

insertion of cyclohexyne into cyclic ketones. The reaction is initiated by the alkoxide-mediated generation of the reactive cycloalkyne species in situ, followed

relatively acidic ligands on iodine (such as acetate) have been replaced by alkoxide. In all cases, the α carbon forms a bond to iodine. Reduction of iodine(III)

useful than the simple tetraalkyl compounds are mixed ligand complexes with alkoxide and cyclopentadienyl coligands. Titanium is capable of forming complexes

is of the carbon attacking the carbonyl compound. The resulting β-nitro alkoxide is protonated by the conjugate acid of the base that originally deprotonated

starting ester (RCOOR1) undergoes nucleophilic attack by the incoming alkoxide (R2O−) to give a tetrahedral intermediate, which either reverts to the

third isomer results from d,l-PhCH(OH)−CH(OH)Ph. The reaction with simple alkoxide sources with disulfur dichloride gives the unbranched ROSSOR. They are

to aspartate, but owing to evidence provided by NMR that the resultant alkoxide form of serine would have a much stronger pull on the proton than does

the leaving group is a carboxylate anion—a better leaving group than an alkoxide anion because their negative charge is more delocalised. However, such

formation of the oxyphosphonium intermediate 8 is slow and facilitated by the alkoxide. Therefore, the overall rate of reaction is controlled by carboxylate basicity

"Reacting trialkyl orthoformate with boron trifluoride and lactone, then with alkoxide or alkanol and base", published 1991-02-05, assigned to Alza Corp.  Jorge

of diketene with 2,4-hexadienal promoted by chiral Schiff base-titanium alkoxide complexes". Tetrahedron: Asymmetry. 6 (10): 2511–2516. doi:10.1016/0957-4166(95)00328-M

A disodium salt results from reaction with sodium hydroxide or sodium alkoxide. These are likely to be tautomeric with a hydrogen moving to an oxygen

synthesis of titanium disulfide thin films and powders using titanium alkoxide precursors". Journal of Non-Crystalline Solids. 354 (15–16): 1801–1807

referred to as "the Battelle Process". The process uses magnesium titanium alkoxide. The Papersave process is available in Europe through Nitrochemie Wimmis

(C6H5–OH), which is acidic at the hydroxyl (OH), as charge on the oxygen (alkoxide –O−) is partially delocalized into the benzene ring. Although benzylic

silyl group from an oxygen attached to phosphorus to the newly created alkoxide center. Conjugate addition is also possible, and gives γ-functionalized

alkenylborane gives an boron-free enol. Organoborane activation with hydroxide or alkoxide and treatment with X2 yields haloalkanes. With excess base, two of the

that are used in the conservation and restoration of leather. Aluminum alkoxide – 1% in white spirit, used as a chemical restabilizing retanning agent

(1996-01-01). "Assembly of Molybdenum/Titanium μ-Oxo Complexes via Radical Alkoxide C−O Cleavage". Journal of the American Chemical Society. 118 (42): 10175–10188

ene-adduct- Me2AlCl complex can further react to afford methane and aluminum alkoxide, which can prevent proton-catalyzed rearrangements and solvolysis (Figure

intermediate. The reformation of the C-O double bond ejects the ester. The alkoxide deprotonates the ammonia forming an alcohol and amide as products. On heating

abstracts a hydrogen atom from the alpha-CH functionality of the coordinated alkoxide substrate. The tyrosinyl radical participates in the catalytic cycle: 1e-oxidation

and BaTiO3 (Lessing 1989). Unlike the sol–gel process in which the metal alkoxide participates in the gel-forming reactions this process is based on a gelation

Andersen earned his Ph.D. with several fundamental organometallic and alkoxide compounds of beryllium. Andersen then spent a year as postdoctoral researcher

produce Al2O3, repairing the protective aluminum oxide layer. The aluminum alkoxide does not make a tight oxide layer; water is essential to repair the holes

recognition. Oxoalkoxometalates are clusters that contain both oxide and alkoxide ligands. Typically they lack terminal oxo ligands. Examples include the

5030. doi:10.1021/ja01076a076. Gideon, Fraenkel; Watson Debra (1975). "Alkoxide adduct of an amide. Mean lifetime of an intimate ion pair". J. Am. Chem

group in 46 was deprotected to give alcohol 47. Reaction of the lithium alkoxide of 47 with the Ojima lactam 48 adds the tail in 49. Deprotection of the

3,500 ppm water in the E20 experiments by TU Darmstadt the alcoholate/alkoxide corrosion stopped. In the fuel ethanol this resembles 20,000 ppm or 2 volume%

amines, resulting in the formation of the imidazole ring. Reaction with alkoxide then converts the nitrile nearest the sugar to an iminoester; the benzoyl

5030. doi:10.1021/ja01076a076. Gideon, Fraenkel; Watson Debra (1975). "Alkoxide adduct of an amide. Mean lifetime of an intimate ion pair". J. Am. Chem

nature and forms an intermediate with protonated phosphate and deprotonated alkoxide leaving group. The leaving group is protonated via the glutamate which

substrate reacts with the N-oxyammonium species. Attack of the substrate alkoxide on either nitrogen or oxygen may occur, although the former is believed

wherein one face of the lithium enolate is blocked by the secondary lithium alkoxide and the solvent molecules associated with that lithium cation. In accordance

of aryllithium reagents is often enhanced by the addition of potassium alkoxides. Organolithium reagents can also carry out nucleophilic attacks with epoxides

career. In recent works, Mehrkhodavandi writes about the role of the first alkoxide-bridged indium complex and the zinc analogues as important catalysts in

robust. Like their derivatives lacking organic substituents, halides and alkoxide ligands for the later organomain group compounds tend to hydrolyze. Organophosphorus

PMID 11670960. Roussel, P.; Hitchcock, P.B.; Tinker, N.D.; Scott, P. (1997). "Alkoxide and Aryloxide Derivatives of a (Triamidoamine)uranium Complex". Inorg.

"Reacting trialkyl orthoformate with boron trifluoride and lactone, then with alkoxide or alkanol and base", published 1991-02-05, assigned to Alza Corp.  J.

hydroxide, carbonate, and phosphate bases in place of the traditional alkoxide and silylamide bases have been developed. The Buchwald group has developed

of NO2) (2) The newly introduced nitro group is then displaced by the alkoxide from 3-methoxypropanol to yield the corresponding ether (3). Treatment

oxazaborolidine reductions. (1) Lithium aluminium hydride (LAH) modified with chiral alkoxide ligands has been shown to proceed in good yield and high enantioselectivity

however, the dimer may undergo either disproportionation to form a samarium alkoxide and carbonyl compound, or protonation to form a carbinol radical ii followed

understood than β-alkyl elimination. Examples are reported to occur from metal alkoxide and amido complexes. A theoretical study showed that these reactions are

It consists of phenoxide reacting at the oxirane and resulting in an alkoxide, that displaces the adjacent chloride to form a new epoxide ring. The second

centers. The fourth group on Si is usually an alkyl, halide, hydride, alkoxide, etc. In the cubic clusters with Oh symmetry the Si-O-Si angles are in

cleaner and is often sealed with a primer application like Silane A-187 or alkoxide. Application of the primer can be achieved through manual means, like a

to a cyclic tetrayne was guided by aluminum coordination to a proximal alkoxide, thus generating the desired enediyne core in one step via two successive

the β-diketiminato germylene hydride to form the corresponding germylene alkoxide in quantitative yield. This reaction proceeds through a nucleophilic hydride

and Poly(α,α,α',α'-tetramethyl-p-xylylene)-co-poly(p-xylylene) from Alkoxide Precursors I: Optical Properties and Thermal Stability". Chemical Vapor

silica spheres can be obtained from the hydrolysis and condensation of alkoxide silicon by the following methods: Hydrolysis: to form silanol groups Si(OR)

PMC 5575506. PMID 28489308. Hendrikus, Hendriksen, Coenradus Johannes (2012). Alkoxide packaged sodium dihydrogenphosphide: synthesis and reactivity (Thesis)

0177. Prakash, G. K. Surya; Hu, Jinbo; Olah, George A. (September 2003). "Alkoxide- and Hydroxide-Induced Nucleophilic Trifluoromethylation Using Trifluoromethyl

Farha OK, Stern CL, Sarjeant AA, Hupp JT (March 2009). "Post-synthesis alkoxide formation within metal-organic framework materials: a strategy for incorporating

Characterisation of Silverpolyfluoroalkoxyaluminates AgAl(ORF)4, Calculation of the Alkoxide Ion Affinity". Chemistry – A European Journal. 7 (2): 490–502. doi:10

Thomas E. (July 31, 2015). "Surprisingly facile CO2 insertion into cobalt alkoxide bonds: A theoretical investigation". Beilstein Journal of Organic Chemistry

AS, George SM (December 2011). "Molecular layer deposition of aluminum alkoxide polymer films using trimethylaluminum and glycidol". Langmuir. 27 (24):

W. (March 1999). "Chloride abstraction activity of Ce(IV) nitrate and alkoxide complexes: Facile formation of [CeCl5(THF)][CeClZ(THF)5] (Z=NO3, Cl)".