Category: 17877-23-5

Yap, Chew Pheng published the artcileMetal-free catalytic hydrogen production from a polymethylhydrosilane-water mixture, Quality Control of 17877-23-5, the publication is RSC Advances (2016), 6(7), 5903-5906, database is CAplus.

Hydrogen gas is the most promising carbon-free energy carrier although its on-demand generation remains a formidable challenge. One of the potential pathways for generating hydrogen is through hydrolytic oxidation of organosilanes. Here, we demonstrate that the hydroxide ion OH^– serves as a potent room-temperature metal-free catalyst in the hydrolytic oxidation of polymethylhydrosilane, PMHS to hydrogen gas and the corresponding silanol with a turnover number and turnover frequency in excess of 200 and 8 min^-1 resp. Kinetic studies suggest the hydrogen generation rate is first order with respect to PMHS and OH^– but zero order with respect to water. The first step of the reaction, where the Si center of PMHS is attacked by the OH^– ion, is believed to be the rate-determining step.

RSC Advances published new progress about 17877-23-5. 17877-23-5 belongs to alcohols-buliding-blocks, auxiliary class Protection and Derivatization Reagent, name is Triisopropylsilanol, and the molecular formula is C12H25Br, Quality Control of 17877-23-5.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Marciniec, Bogdan published the artcileSilylation of silanols with vinylsilanes catalyzed by a ruthenium complex, Name: Triisopropylsilanol, the publication is Tetrahedron Letters (2008), 49(8), 1310-1313, database is CAplus.

A new ruthenium complex-catalyzed O-silylation of silanols with vinylsilanes leading to siloxane bond formation with the evolution of ethylene is described. A maximum conversion of silanol is reached using an excess of vinylsilane which also yields the product of the homo-coupling of the latter. Under the optimum conditions, when a vinylsilane with at least one ethoxy substituent is used, the reaction gives exclusively unsym. siloxanes.

Tetrahedron Letters published new progress about 17877-23-5. 17877-23-5 belongs to alcohols-buliding-blocks, auxiliary class Protection and Derivatization Reagent, name is Triisopropylsilanol, and the molecular formula is C9H22OSi, Name: Triisopropylsilanol.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Hreczycho, Grzegorz published the artcileA new selective approach to unsymmetrical siloxanes and germasiloxanes via O-metalation of silanols with 2-methylallylsilanes and 2-methylallylgermanes, Recommanded Product: Triisopropylsilanol, the publication is New Journal of Chemistry (2011), 35(12), 2743-2746, database is CAplus.

A scandium(iii) trifluoromethanesulfonate-catalyzed O-metalation of silanols with 2-methylallylsilanes and 2-methylallylgermanes leading to siloxane or germasiloxane bond formation under mild conditions with evolution of isobutylene is described.

New Journal of Chemistry published new progress about 17877-23-5. 17877-23-5 belongs to alcohols-buliding-blocks, auxiliary class Protection and Derivatization Reagent, name is Triisopropylsilanol, and the molecular formula is C9H22OSi, Recommanded Product: Triisopropylsilanol.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Mitsudome, Takato published the artcileSupported gold nanoparticle catalyst for the selective oxidation of silanes to silanols in water, Recommanded Product: Triisopropylsilanol, the publication is Chemical Communications (Cambridge, United Kingdom) (2009), 5302-5304, database is CAplus and MEDLINE.

Hydroxyapatite-supported gold nanoparticles (AuHAP) can act as highly efficient and reusable catalysts for the oxidation of diverse silanes into silanols in water; this is the first catalytic methodol. for the selective synthesis of aliphatic silanols using water under organic-solvent-free conditions.

Chemical Communications (Cambridge, United Kingdom) published new progress about 17877-23-5. 17877-23-5 belongs to alcohols-buliding-blocks, auxiliary class Protection and Derivatization Reagent, name is Triisopropylsilanol, and the molecular formula is C9H22OSi, Recommanded Product: Triisopropylsilanol.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Nelson, Jade D. published the artcilePhoto-induced ring expansion of 1-triisopropylsilyloxy-1-azidocyclohexane: preparation of ε-caprolactam, Recommanded Product: Triisopropylsilanol, the publication is Organic Syntheses (2003), 165-175, database is CAplus.

The synthesis of lactams has attracted considerable attention in recent years. Despite the wide range of methodologies that have been examined for the synthesis of lactams, the Beckmann and Schmidt rearrangements still remain by far the most convenient and general methods. The strongly acidic conditions required for the Schmidt rearrangement often lead to undesired byproducts. This is a major limitation particularly with acid-labile substrates. A convenient and environmentally benign Schmidt rearrangement is reported in which the azidohydrin is prepared using a recyclable acid catalyst and trimethylsilyl azide. Photolysis of the azidocyclohexane results in the ring expansion, probably through the formation of a reactive nitrene. The byproducts from this reaction are gases or innocuous silanes. The main limitation with the method is that at present the ring expansion is not regioselective.

Organic Syntheses published new progress about 17877-23-5. 17877-23-5 belongs to alcohols-buliding-blocks, auxiliary class Protection and Derivatization Reagent, name is Triisopropylsilanol, and the molecular formula is C9H22OSi, Recommanded Product: Triisopropylsilanol.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Miyoshi, Norikazu published the artcilePractical method for hydroxyl-group protection using strontium metal and readily available silyl chlorides, Category: alcohols-buliding-blocks, the publication is Chemical Communications (Cambridge, United Kingdom) (2022), 58(43), 6312-6315, database is CAplus and MEDLINE.

Smooth O-silylation of secondary aliphatic alcs. R¹CH(OH)R² was achieved by coupling with silyl chlorides R₃SiCl (R₃ = ^tBuMe₂, Et₃, ⁱPr₃, ^tBuPh₂, Ph₃) promoted by strontium metal in DMA, instead of use the expensive, yet more reactive, and commonly used silyl triflate. The reaction occurred almost completely with various alcs., giving silyl ethers R¹CH(OSiR₃)R².

Chemical Communications (Cambridge, United Kingdom) published new progress about 17877-23-5. 17877-23-5 belongs to alcohols-buliding-blocks, auxiliary class Protection and Derivatization Reagent, name is Triisopropylsilanol, and the molecular formula is C9H22OSi, Category: alcohols-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Urayama, Teppei published the artcileO₂-enhanced catalytic activity of gold nanoparticles in selective oxidation of hydrosilanes to silanols, Recommanded Product: Triisopropylsilanol, the publication is Chemistry Letters (2015), 44(8), 1062-1064, database is CAplus.

O₂ acts as a nonconsumed activator for gold nanoparticles (AuNPs) in the oxidation of hydrosilanes to silanols with water under O₂ atm, providing an acceleration of more than 200 times relative to the reaction rate under Ar atm. The AuNP catalyst under aerobic conditions exhibits high activity in the oxidation with high turnover numbers (1230000). Various hydrosilanes including less-reactive bulky ones can be converted to the corresponding silanols in excellent yields. Moreover, the present AuNP catalyst is reusable while maintaining the high performance.

Chemistry Letters published new progress about 17877-23-5. 17877-23-5 belongs to alcohols-buliding-blocks, auxiliary class Protection and Derivatization Reagent, name is Triisopropylsilanol, and the molecular formula is C22H18Cl2N2, Recommanded Product: Triisopropylsilanol.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Adam, Waldemar published the artcileHost-Guest Chemistry in a Urea Matrix: Catalytic and Selective Oxidation of Triorganosilanes to the Corresponding Silanols by Methyltrioxorhenium and the Urea/Hydrogen Peroxide Adduct, Recommanded Product: Triisopropylsilanol, the publication is Journal of the American Chemical Society (1999), 121(10), 2097-2103, database is CAplus.

The oxidation of silanes to silanols, catalyzed by methyltrioxorhenium (MTO), proceeds in high conversions and excellent selectivities in favor of the silanol (no disiloxane product) when the urea/hydrogen peroxide adduct (UHP) is used as oxygen source instead of 85% aqueous H₂O₂. It is proposed that this novel Si-H oxidation takes place in the helical urea channels, in which the urea matrix serves as host for the silane substrate, the H₂O₂ oxygen source, and the MTO metal catalyst as guests. In this confined environment, the metal catalyst is stabilized against decomposition, and this enhances higher conversions while condensation of the silanol to its disiloxane is avoided for steric reasons. The oxidation of the optically active silane (S)-(α-Np)PhMeSiH proceeds with retention of configuration in excellent yield. To date, no catalytic Si-H oxygen insertion has been reported for the preparation of optically active silanols. In analogy with the stereoselectivity in the dioxirane oxidation of (+)-(α-Np)PhMeSiH to (+)-(α-Np)PhMeSiOH, a concerted spiro-type transition-state structure is proposed for this novel Si-H oxidation Herewith, a valuable synthetic method for the preparation of silanols has been made available through catalytic and selective oxidation of silanes to silanols by the MTO/UHP system.

Journal of the American Chemical Society published new progress about 17877-23-5. 17877-23-5 belongs to alcohols-buliding-blocks, auxiliary class Protection and Derivatization Reagent, name is Triisopropylsilanol, and the molecular formula is C9H22OSi, Recommanded Product: Triisopropylsilanol.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Driess, Matthias published the artcileSynthesis and structure of siloxy-substituted ZnO aggregates having (ZnO)_n (n = 2, 4) and Zn₃O₄ cores, Application of Triisopropylsilanol, the publication is European Journal of Inorganic Chemistry (2000), 2517-2522, database is CAplus.

Convenient syntheses and x-ray crystallog. characterizations of the first bis(trimethylsilyl)amido-, Me-, and iodozinc triorganosiloxide aggregates 1–5 are described. They are accessible by the simple reaction of ZnR’₂ [R = Me, N(SiMe₃)₂] with the resp. silanols R₃SiOH (R = Me, Et, iPr), which affords the dimeric [(Me₃Si)₂NZnOSiR₃]₂ (1a: R = iPr; 1b: R = Et), trinuclear [(MeZn)₂Zn(OSiPrⁱ₃)₄] (2a), {[(Me₃Si)₂NZn]₂Zn(OSiR₃)₄} (2b: R = Et; 2c: R = Me), and tetranuclear heterocubanes [MeZnOSiR₃]₄ (3a: R = Me; 3b: R = Et), resp. The latter were oxidized with four equivalent of elemental I₂ to form the tetraiodo derivatives [IZnOSiR₃]₄ (4a: R = Me; 4b: R = Et) in 82 and 88% yield, resp. Due to the higher polarity of the Zn-I vs. Zn-C σ-bond, the Zn-O distances of the almost regular Zn₄O₄ core in 4a are 2-6 pm shorter than those observed in the less Lewis-acidic cluster 3b. However, the Zn-O distances in 3b and 4a are ∼10-15 pm longer than those in 1a, 2a, and 2c, due to different coordination numbers at Zn and the effects of ring strain. Remarkably, the iodo derivatives 4a,b undergo dissociation in THF to give the resp. dimeric THF solvates [IZn(THF)OSiR₃]₂ (5a: R = Me; 5b: R = Et), whereas the Zn₄O₄ cores in 3a and 3b are retained even in aprotic polar solvents.

European Journal of Inorganic Chemistry published new progress about 17877-23-5. 17877-23-5 belongs to alcohols-buliding-blocks, auxiliary class Protection and Derivatization Reagent, name is Triisopropylsilanol, and the molecular formula is C9H22OSi, Application of Triisopropylsilanol.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Ghavtadze, Nugzar published the artcileConversion of 1-alkenes into 1,4-diols through an auxiliary-mediated formal homoallylic C-H oxidation, Synthetic Route of 17877-23-5, the publication is Nature Chemistry (2014), 6(2), 122-125, database is CAplus and MEDLINE.

The ubiquitous nature of C-H bonds in organic mols. makes them attractive as a target for rapid complexity generation, but brings with it the problem of achieving selective reactions. In developing new methodologies for C-H functionalization, alkenes are an attractive starting material because of their abundance and low cost. Here we describe the conversion of 1-alkenes into 1,4-diols. The method involves the installation of a new Si,N-type chelating auxiliary group on the alkene followed by iridium-catalyzed C-H silylation of an unactivated δ-C(sp³)-H bond to produce a siloxane intermediate. Oxidation of the C-Si bonds affords a 1,4-diol. The method is demonstrated to have broad scope and good functional group compatibility by application to the selective 1,4-oxygenation of several natural products and derivatives

Nature Chemistry published new progress about 17877-23-5. 17877-23-5 belongs to alcohols-buliding-blocks, auxiliary class Protection and Derivatization Reagent, name is Triisopropylsilanol, and the molecular formula is C9H22OSi, Synthetic Route of 17877-23-5.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts