Day: March 16, 2021

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Sandmeyer difluoromethylation of (hetero-)arenediazonium salts

A Sandmeyer-type difluoromethylation process has been developed that allows the straightforward conversion of (hetero-)arenediazonium salts into the corresponding difluoromethyl (hetero-)arenes under mild conditions. The actual difluoromethylating reagent, a difluoromethyl-copper complex, is formed in situ from copper thiocyanate and TMS-CF2H. The diazonium salts are either preformed or generated in situ from broadly available aromatic amines.

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Reference£º
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

 

Electric Literature of 1111-67-7, Chemistry is the science of change. But why do chemical reactions take place? Why do chemicals react with each other? The answer is in thermodynamics and kinetics.In a document type is Article, and a compound is mentioned, 1111-67-7, Cuprous thiocyanate, introducing its new discovery.

Two novel nanoporous supramolecular architectures based on copper(I) coordination polymers with uniform (8, 3) and (8210) nets: In situ formation of tetrazolate ligands

The hydro/solvothermal reactions of Cu(I)/Cu(II) salt, NaN3, and acetonitrile in water or methanol yield two noninterpenetrated supramolecular networks containing 1D hexagonal and square nanochannels, {[Cu(Mtta)]¡¤0.17H2O}n (1) and its pseudopolymorph [Cu(Mtta)]n (2) (Mtta = 5-methyl tetrazolate), involving ligand insitu formation by cycloaddition of nitriles and azides. The copper-(I) centers in both complexes are all bridged by Mtta ligands, forming the different shapes of the cavity. 1 exhibits an unprecedented uniform (8, 3) topological metal network, whereas 2 is a 3-connected (8210) metal net.

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Reference£º
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

 

Reference of 1317-39-1, Chemistry is the science of change. But why do chemical reactions take place? Why do chemicals react with each other? The answer is in thermodynamics and kinetics.In a document type is Patent, and a compound is mentioned, 1317-39-1, Copper(I) oxide, introducing its new discovery.

Thiazolidine derivatives use

A thiazolidine derivative of the formula: STR1 wherein R1 is hydrogen, hydroxyl, lower alkyl having 1 to 4 carbon atoms, lower alkoxy having 1 to 4 carbon atoms, or lower carboxylic acyloxy having 2 to 4 carbon atoms; each of R2 and R3 is hydroxyl, lower alkyl having 1 to 4 carbon atoms, lower alkoxy having 1 to 4 carbon atoms or lower carboxylic acyloxy having 2 to 4 carbon atoms or pharmaceutically acceptable salt thereof a is a novel compound having antiulcer activity and inhibitory effect on gastric acid secretion. The compound is useful as antiulcer agent or inhibitory agent of gastric acid secretion.

Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data. Reference of 1317-39-1, If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 1317-39-1, in my other articles.

Reference£º
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

 

name: Cuprous thiocyanate, Name is Cuprous thiocyanate, belongs to copper-catalyst compound, is a common compound. name: Cuprous thiocyanateIn an article, authors is Ahuja, Ritu, once mentioned the new application about name: Cuprous thiocyanate.

Chelating and bridging bis(diphenylphosphino)aniline complexes of copper(I)

The ligand bis(diphenylphosphino)aniline (dppan) has been shown to be a versatile ligand sporting different coordination modes and geometries as dictated by copper(I) and the counter ion. The molecular structures of its Cu(I) complexes were characterized by X-ray crystallography. The ligand was found in a chelating mode and monomeric complexes were formed when the ligand to copper ratio was 2:1 and the anion was non-coordinating. However, with thiocyanate as the counter anion, the ligand was found to adopt two different modes, with one ligand chelating and the other acting as a monodentate ligand. With CuX (X = Cl, Br), dppan formed a tetrameric complex when the ligand and metal were reacted in the ratio of 1:1. But reactions containing ligand and metal in the ratios of 1:2 or 2:1, resulted in the formation of a mixture of species in solution. Crystallization however, led to the isolation of the tetrameric complex. Variable temperature 31P{1H} NMR spectra of the isolated tetramers did not show the presence of chelated structures in solution. Tetra-alkylammonium salts were added to solutions of various complexes of dppan and studied by 31P{1H} NMR to probe the effect of anions on the stability of complexes in solution. The Cu-dppan complexes were robust and did not interconvert with other structures in solution unlike the bis(diphenylphosphino)isopropylamine complexes.

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Reference£º
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

 

A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, category: copper-catalyst, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. category: copper-catalyst, Name is Cuprous thiocyanate, molecular formula is CCuNS. In a Article, authors is Adams, Christopher J.£¬once mentioned of category: copper-catalyst

Novel mixed-metal-alkynyl complexes stabilised by di-imine ligands: Synthesis, characterisation and electrochemistry of [(tBu2bipy)Pt(C?CR)2M(SCN)] (R = C6H4Me, SiMe3; M = Cu, Ag)

Reaction of (4,4?-bis-tert-butyl-2,2?-dipyridyl) platinum bis-alkynyl [(tBu2bipy)Pt(C?CR)2] (R = C6H4Me 1a, SiMe3 1b) with Group 11 metal thiocyanate salts (M = Cu, Ag) affords 1:1 mixed-metal complexes [(tBu2bipy)Pt(C?CR)2M(SCN)] (M = Cu, R = C6H4Me 2a, SiMe3 2b; M = Ag, R = C6H4Me 3a, SiMe3 3b). X-ray analyses of the complexes 2a and 3b show that the group 11 metal is bonded in an eta2 fashion to two carbon-carbon triple bonds so that the co-ordination geometry is trigonal planar. The Pt atom geometry in both complexes is square planar. An electrochemical study of the copper complexes 2a and 2b reveals one fully reversible one electron reduction that is consistent with the first reduction of the co-ordinated bipyridyl ligand. There is also an irreversible one electron oxidation that corresponds to the CuI to CuII transition.

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Reference£º
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

 

Application of 1111-67-7, Catalysts function by providing an alternate reaction mechanism that has a lower activation energy than would be found in the absence of the catalyst. In some cases, the catalyzed mechanism may include additional steps.In a article, 1111-67-7, molcular formula is CCuNS, introducing its new discovery.

Synthesis of alpha-trifluoromethyl ketones via the Cu-catalyzed trifluoromethylation of silyl enol ethers using an electrophilic trifluoromethylating agent

A method has been developed for the synthesis of alpha-trifluoromethyl ketones via the Cu-catalyzed trifluoromethylation of silyl enol ethers with an electrophilic trifluoromethylating agent, which produces a trifluoromethyl radical.

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Reference£º
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

 

Recommanded Product: 13395-16-9, Name is Bis(acetylacetone)copper, belongs to copper-catalyst compound, is a common compound. Recommanded Product: 13395-16-9In an article, authors is Teranishi, Toshiharu, once mentioned the new application about Recommanded Product: 13395-16-9.

Crystal structure-selective formation and carrier dynamics of type-II CdS-Cu31S16 heterodimers

Anisotropically phase-segregated CdS-Cu31S16 heterodimers with type-II band alignment were spontaneously formed by selective growth of monoclinic Cu31S16 phases on preformed hexagonal CdS phases. The photo-induced carrier dynamics of the heterodimer was investigated by fluorescence and transient absorption measurements. The Royal Society of Chemistry 2013.

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Reference£º
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

 

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Substituted 2-benzothiazolamines as sodium flux inhibitors: Quantitative structure-activity relationships and anticonvulsant activity

Thirty-two aryl-substituted 2-benzothiazolamines have been tested for their ability to modulate sodium flux in rat cortical slices. A QSAR analysis, applied to these derivatives, showed a trend toward increasing potency as sodium flux inhibitors with increasing lipophilicity, decreasing size, and increasing electron withdrawal of the benzo ring substitutents. Additionally, 4- or 5-substitution of the benzo ring was found to decrease potency. The combination of increased lipophilicity, small size, and electron withdrawal severely limited which groups were tolerated on the benzo ring, thus suggesting that the optimal substitution patterns have been prepared within this series. Nine of these compounds were potent inhibitors of veratridine-induced sodium flux (NaFl). These nine compounds also proved to be anticonvulsant in the maximal electroshock (MES) assay. Fourteen additional 2-benzothiazolamines demonstrated activity in the MES screen, yet exhibited no activity in the NaFl assay. These derivatives may be interacting at the sodium channel in a manner not discernible by the flux paradigm, or they may be acting by an alternative mechanism in vivo.

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Reference£º
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

 

A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, HPLC of Formula: CCuNS, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. HPLC of Formula: CCuNS, Name is Cuprous thiocyanate, molecular formula is CCuNS. In a Article, authors is He, Jun£¬once mentioned of HPLC of Formula: CCuNS

Mixed-valence CuIICuI15I17 cluster builds up a 3D metal-organic framework with paramagnetic and thermochromic characteristics

Four cubane-like CU4I4 units are assembled around an iodine atom to form the giant, mixed-valent CuIICuI 15I17 cluster. The CuIICuI 15I17 cluster and a bipyrazole linker form a 3D open framework with paramagnetic and thermochromic properties. This paper also touches on the resemblance of this cluster to the self-similar object of a Sierpinski tetrahedron.

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Reference£º
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”

 

Reference of 1317-39-1, Chemistry is the science of change. But why do chemical reactions take place? Why do chemicals react with each other? The answer is in thermodynamics and kinetics.In a document type is Patent, and a compound is mentioned, 1317-39-1, Copper(I) oxide, introducing its new discovery.

Benzo[B]thiophene compounds, intermediates, processes, compositions, and methods

The instant invention provides novel benzo[b]thiophene compounds, intermediates, compositions, pharmaceutical formulations, and methods of use. The novel benzo[b] thiophenes have the formula wherein R1is -H, -OH, -O(C1-C4alkyl), -OCOAr where Ar is phenyl or substituted phenyl, -O(CO)OAr where Ar is phenyl or substituted phenyl, -OCO(C1-C6alkyl), -O(CO)O(C1-C6alkyl), or -OSO2(C4-C6alkyl); R2is -H, -F, -Cl, -OH, -O(C1-C4alkyl), -OCOAr where Ar is phenyl or substituted phenyl, -O(CO)OAr where Ar is phenyl or substitutedphenyl,-OCO(C1-C6alkyl),-O(CO)O(C1-C6alkyl), or -OSO2(C4-C6alkyl); R3and R4are, independently, -H, -F, -Cl, -CH3,-OH, -O(C1-C4alkyl), -OCOAr where Ar is phenyl or substituted phenyl, -OCO(C1-C6alkyl), -O(CO)O(C1-C6alkyl), or -OSO2(C4-C6alkyl), with the proviso that R3and R4are not both hydrogen; n is 2 or 3; and R5is 1-piperidinyl, 1-pyrrolidinyl, methyl-1-pyrrolidinyl, dimethyl-1-pyrrolidinyl, 4-morpholino, dimethylamino, diethylamino, or 1-hexamethyleneimino; ???or a pharmaceutically acceptable salt or solvate thereof.

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Reference£º
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”