78279-92-2

Upstream product

• 75-77-4 chloro-trimethyl-silane 
• 1124-11-4 Tetramethylpyrazine 

Downstream Products

• 174968-73-1 bis(4-methoxyphenyl)methyl trimethylsilyl ether 
• 80423-31-0 (Z)-2-chloro-1-phenyl-1-(trimethylsilyloxy)ethylene 
• 31151-36-7 ((Z)-2-Chloro-1-phenyl-vinyloxy)-trimethyl-silane 
• 78935-61-2 (Z)-((1-ethoxy-2-phenylvinyl)oxy)trimethylsilane 
• 78935-57-6 trimethylsilyl ketene acetal of ethyl phenylacetate 
• 39158-85-5 2-methyl-1-phenyl-1-trimethylsiloxy-1-propene 
• 66323-99-7 trimethyl[(Z)-(1-phenyl-1-propenyl)oxy]silane 
• 58518-76-6 ((1-(4-chlorophenyl)vinyl)oxy)trimethylsilane 
• 54731-27-0 1-p-methylphenyl-1-trimethylsiloxyethene 
• 55991-65-6 [1-(4-methoxyphenyl)vinyloxy]trimethylsilane 
• 13735-81-4 1-styrenyloxytrimethylsilane 

Relevant academic research and scientific papers

METHOD FOR PRODUCING POLYNUCLEAR METAL CLUSTER

PROBLEM TO BE SOLVED: To obtain a method for producing a polynuclear metal cluster that can control the number of nuclei. SOLUTION: A method for producing a polynuclear metal cluster includes a reductive reaction of reducing a metal complex as a starting material with a silicon compound (1), where the polynuclear metal cluster is an oxygen-crosslinked polynuclear metal cluster (where n is 1 or 2, R1, R2, R3, R4, R5 and R6 are the same or different to represent a hydrogen atom or a C1-4 alkyl group). SELECTED DRAWING: None COPYRIGHT: (C)2020,JPOandINPIT

REDUCTANT AND METHOD FOR PRODUCING METAL USING THE SAME

PROBLEM TO BE SOLVED: To provide a novel reductant that can reduce metal ions by a reduction reaction in solvent, and a method for producing metal using the reductant. SOLUTION: A reductant comprises a compound represented by the general formula (where X1 and X2 are the same or different to represent a nitrogen atom or a methine group, R1, R2, R3, R4, R5 and R6 are the same or different to represent a hydrogen atom, a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, an isobutyl group, a sec-butyl group or a tert-butyl group). There is also provided a method for producing metal by bringing the reductant into contact with a metal ion source in solvent. SELECTED DRAWING: None COPYRIGHT: (C)2016,JPOandINPIT

Titanium-catalyzed reductive umpolung reactions with a metal-free terminal reducing agent

A new method for titanium-catalyzed reductive umpolung reactions is reported that overcomes the traditional requirement for a stoichiometric metallic reductant. With N,N′-disilylated tetramethyldihydropyrazine as a potent organic reducing agent, reductive carbonyl-nitrile, enone-acrylonitrile and pinacol coupling reactions can be achieved in good yields and stereoselectivities. [Cp2TiI2] is a superior catalyst to [Cp2TiCl2], which is rationalized by a faster generation of the active catalyst [Cp2TiI]. A mechanism is proposed that is in agreement with the experimental results. Replacing zinc: A protocol for titanium(III)-catalyzed reductive umpolung reactions is presented that enables the title reactions in the presence of an N,N′-disilylated tetramethyldihydropyrazine as an organic sacrificial reducing agent. It is successfully applied to carbonyl-nitrile, enone-acrylonitrile and pinacol coupling reactions. A remarkable effect of the titanocene counterion renders titanocene diiodide a superior catalyst.

Effects of Cyclic 8-?-Electron Conjugation in Reductively Silylated N-Heterocycles

A number of partly reduced N-heterocycles,2-15, have been prepared by reductive silylation of aromatic precursors.The N-silyl substituents stabilize unusual electronic structures such as the 1,4-dihydropyrazine system toward rearrangements.In addition, R3Si substitution is likely to cause planarization at the amino nitrogen atoms.This may lead to cyclic 8-?-electron conjugation, as has been established, e.g., for 1,4-bis(trimethylsilyl)-1,4-dihydropyrazine (2).The experimental results obtained for 2 by comparative 1H NMR and photoelectron spectroscopic studies are a distinct paratropism, an exceptionally low ionization potential, and an enormous difference between the first and the second ionization energy.These effects confirm the predictions made for planar 1,4-dihydropyrazine on the basis of HMO calculations.Corresponding to the very low ionization potentials of most of the reduced compounds, persistent radical cations such as 2+. have been readily obtained and were fully characterized by ESR spectroscopy.Modification of the 1,4-dihydropyrazine 2 by methyl substitution or by extension of the ? system results in an attenuation of the 8-?-electron conjugation through steric and/or electronic factors.The flexibility of this system toward steric requirements can be related to the redox behavior of flavoenzymes.