19254-78-5

Upstream product

• 1066-35-9 dimethylmonochlorosilane 
• 402-43-7 p-trifluoromethylphenyl bromide 
• 64-17-5 ethanol 
• 31835-94-6 1-(4-trifluoromethylphenyl)-1,1,2,2,2-pentamethyldisilane 

Downstream Products

• 228873-97-0 hydroxy(dimethyl)(4-trifluoromethylphenyl)silane 
• 1393446-17-7 methoxydimethyl(4-(trifluoromethyl)phenyl)silane 
• 402-45-9 4-hydroxybenzotrifluoride 
• 1415919-37-7 dimethyl(4-trifluoromethylphenyl)silyl formate 
• 1415409-21-0 butyldimethyl[4-(trifluoromethyl)phenyl]silane 
• 60457-98-9 chlorodimethyl[4-(trifluoromethyl)phenyl]silane 
• 1452870-36-8 dimethyl(4-(trifluoromethyl)phenyl)silyl isocyanate 
• 613-33-2 (4,4'-dimethyl-1,1'-biphenyl) 

Relevant academic research and scientific papers

Direct Electrophilic Silylation of Terminal Alkynes

(Equation presented) A variety of alkynylsilanes were efficiently prepared via direct silylation of terminal alkynes with aminosilanes in the presence of zinc halides. Base- and nucleophile-sensitive functionalities were perfectly tolerated under the abov

Selective Manganese-Catalyzed Oxidation of Hydrosilanes to Silanols under Neutral Reaction Conditions

The first manganese-catalyzed oxidation of organosilanes to silanols with H2O2 under neutral reaction conditions has been accomplished. A variety of organosilanes with alkyl, aryl, alknyl, and heterocyclic substituents were tolerated, as well as sterically hindered organosilanes. The oxidation appears to proceed by a concerted process involving a manganese hydroperoxide species. Featuring mild reaction conditions, fast oxidation, and no waste byproducts, the protocol allows a low-cost, eco-benign synthesis of both silanols and silanediols.

Effects of substituents on silicon atoms upon absorption and fluorescence properties of 1,3,6,8-tetrakis(silylethynyl)pyrenes

Synthesis, UV–vis absorption, and fluorescence spectroscopic properties of 1,3,6,8-tetrakis(silylethynyl)pyrenes 2–10 were studied. Absorption maxima of CH2Cl2 solutions of these compounds appeared at 437–445 nm, and molar absorption coefficients (ε) of most of these compounds exceeded 105 L mol?1 cm?1. Fluorescence emissions measured in dilute CH2Cl2 solutions are observed in visible region, and their intensities remarkably increased compared with that of pyrene. Fluorescence spectra obtained from concentrated CH2Cl2 solutions exhibited broad excimer emissions when steric bulk of substituents on silicon atoms is sufficiently low. Molecular orbital calculations indicated that HOMO-LUMO energy gap decreased with increasing the number of phenyl groups on silicon atoms, and that the silyl groups act as electron-donating groups to tetraethynylpyrene core. Resonances in 29Si NMR spectra shifts to upfield with increasing the number of phenyl groups on silicon atoms due to the shielding effect of phenyl groups.

Heme Protein Catalysts for Carbon-Silicon Bond Formation In Vitro and In Vivo

The present invention provides compositions and methods for catalyzing the formation of carbon-silicon bonds using heme proteins. In certain aspects, the present invention provides heme proteins, including variants and fragments thereof, that are capable of carrying out in vitro and in vivo carbene insertion reactions for the formation of carbon-silicon bonds. In other aspects, the present invention provides methods for producing an organosilicon product, the method comprising providing a silicon-containing reagent, a carbene precursor, and a heme protein; and combining the components under conditions sufficient to produce an organosilicon product. Host cells expressing the heme proteins are also provided by the present invention.

Synthesis of phenols via fluoride-free oxidation of arylsilanes and arylmethoxysilanes

Rapid, efficient methods have been developed to prepare phenols from the oxidation of arylhydrosilanes. The effects of arene substituents and fluoride promoters on this process show that while electron-deficient arenes can undergo direct oxidation from the hydrosilane, electron-rich aromatics benefit from silane activation via oxidation to the methoxysilane using homogeneous or heterogeneous transition metal catalysis. The combination of these two oxidations into a streamlined flow procedure involving minimal processing of reaction intermediates is also reported.

σπ* orthogonal intramolecular charge-transfer (OICT) excited states and photoreaction mechanism of trifluoromethyl-substituted phenyldisilanes

Photophysical and photochemical properties of phenyldisilanes having a trifluoromethyl substituent on a benzene ring as one of the most suitable substituents for stabilization of the OICT (σπ* orthogonal intramolecular charge transfer) state were investig

Fluoride Ion Catalyzed Reduction of Aldehydes and Ketones with Hydrosilanes. Synthetic and Mechanistic Aspects and an Application to the Threo-Directed Reduction of α-Substituted Alkanones

Reduction of aldehydes and ketones with hydrosilanes proceeded in the presence of a catalytic amount of tetrabutylammonium fluoride or tris(diethylamino)sulfonium difluorotrimethylsilicate in aprotic polar solvents under mild conditions.A significant isotope effect (kH/kD = 1.50) was observed in competitive reduction of acetophenone with HSiMe2Ph and DSiMe2Ph.The reaction was of first order in the concentration of an aprotic polar solvent HMPA.Reduction of 2-methylcyclohexanone gave cis-2-methylcyclohexanol with selectivities up to 95percent.The kinetic and stereochemical results suggest that a hexavalent fluorosilicate - is involved. α-Alkoxy (acyloxy or dimethylamino) ketones were transformed to threo alcohols in high diastereoselectivities.The reduction was also applied to α-methyl-β-keto amides, RCOCH(MeCONR)2, to afford the corresponding threo alcohols in >98percent selectivity.The threo selectivity is explained in terms of the Felkin-Anh model in which interaction of carbonyl oxygen with a countercation is ideally suppressed.The threo-directed reduction was applied to (R)-1-phenyl-4-(2-tetrahydropyranyloxy)-1-penten-3-one and N-(2-benzoylpropanoyl)piperidine.The resulting threo alcohols were respectively converted into (2R,3S)-2,3-(cyclohexylidenedioxy)butanal, a key intermediate of daunosamine synthesis, and into a pharmacologically useful compound threo-N-(3-hydroxy-2-methyl-3-phenylpropyl)piperidine.