Tag: M.W:300-400

Reference of 15929-43-8. Chemistry is an experimental science, and the best way to enjoy it and learn about it is performing experiments.Introducing a new discovery about 15929-43-8, Name is Bis(4-(trifluoromethyl)phenyl)phosphine oxide

Iron-catalyzed clean dehydrogenative coupling of alcohols with P(O)-H compounds: A new protocol for ROH phosphorylation

An efficient oxygen-phosphoryl bond-forming reaction via iron-catalyzed cross dehydrogenative coupling has been developed. This transformation proceeds efficiently under oxidant- and halide-free reaction conditions with H2 liberation, and represents a straightforward method to prepare valuable organophosphoryl compounds from the readily available alcohols and P(O)-H compounds.

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Reference£º
Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate

Related Products of 78871-05-3, Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, get their minds active, and encourage them to do something that doesn’t involve a screen. 78871-05-3, C20H15OP. A document type is Article, introducing its new discovery.

Enantioselective Coupling of Dienes and Phosphine Oxides

We report a Pd-catalyzed intermolecular hydrophosphinylation of 1,3-dienes to afford chiral allylic phosphine oxides. Commodity dienes and air stable phosphine oxides couple to generate organophosphorus building blocks with high enantio- and regiocontrol. This method constitutes the first asymmetric hydrophosphinylation of dienes.

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Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate

A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 1038-95-5, Name is Tri-p-tolylphosphine, molecular formula is C21H21P. In a Article£¬once mentioned of 1038-95-5, Computed Properties of C21H21P

Wetting and surface properties of (modified) fluoro-silanised glass

For all of its many useful properties, glass easily gets “dirty”, due to its relatively high surface free energy, thus often necessitating cleaners in operation, such as windscreen wipers. One possible aid is to coat the glass with a hydrophobic layer, thus reducing propensity for contaminant adhesion. We consider the surface properties of two such glasses: a proprietary brand and a laboratory-produced material, being essentially the same, having received similar fluoro-silane coatings. Such fluorinated glasses were subsequently treated using either a solution of sodium in liquid ammonia to create patterns on a millimetric (or larger) scale, or locally electrogenerated radical anions in dimethylformamide (DMF) solution to create smaller patterns. Wetting techniques (sessile drops) have been used to characterise the coated glass both before and after surface reduction. A considerable increase of wettability follows treatment, potentially useful for facilitating assembly of such glasses by adhesives, in specifically limited, treated zones. “Targeted surface treatment” permits the creation of desired motifs of contrasting surface free energy on the glass surface. This technique has been used to study the shape of deformed wetting triple lines. Experimental findings corroborate theoretical predictions for the most part, although some exceptions are discussed.

Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data.Computed Properties of C21H21P, If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 1038-95-5, in my other articles.

Reference£º
Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate

Application of 29949-84-6, Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 29949-84-6, Name is Tris(3-methoxyphenyl)phosphine, molecular formula is C21H21O3P. In a Patent£¬once mentioned of 29949-84-6

Pyrazinyl-substituted naphthalene derivatives

Compounds of the formula 1where R1 is of the formulae 2R2 is ?R4, ?O?R4, ?O?S (O)2?R4, ?NR4R5, R4?(CH2)b?NH(C=X)?(CH2)?, R4?(CH2)b?O(C=O)NH?(CH2)c?(C=O)NH?, R4(C=O)NH?(C=O)NH?, ?(CH2)b?NH(C=X)?(CH2)c?R4, R4?(CH2)b?O(C=)?(CH2)c?, ?(CH2)b?O(C=O)?(CH2)c?R4, ?NH(C=X)NH?R4, R4?O(C=O)O?, ?O(C=)NH?R4, R4?O(C=O)NH?, ?(CH2)b?(C=0)?(CH2)c?R4, ?NH?S(O)2?R4, ?C(OH)R4R5, ?CH(OH)?R4, ?(C=O)?NR4R5, ?CN, ?NO2, substituted C1 to C6 alkyl, substituted or unsubstituted C1 to C6 alkenyl, or substituted or unsubstituted C1 to C6 alkynyl, said substituted moieties substituted with a moiety of the formulae ?R4, ?R4R5, ?O?R4, or ?S(O)d?R4. These compounds are useful psychotherapeutics and are potent serotonin (5-HT1) agonists and antagonists and may be used in the treatment of depression, anxiety, eating disorders, obesity, drug abuse, cluster headache, migraine, pain and chronic paroxysmal hemicrania and headache associated with vascular disorders, and other disorders arising from deficient serotonergic neurotranmission. The compounds can also be used as centrally acting antihypertensives and vasodilators.

The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 29949-84-6 is helpful to your research., Application of 29949-84-6

Reference£º
Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate

Related Products of 819867-21-5, An article , which mentions 819867-21-5, molecular formula is C22H31O2P. The compound – Di-tert-butyl(2′,6′-dimethoxy-[1,1′-biphenyl]-2-yl)phosphine played an important role in people’s production and life.

PROTEIN KINASE INHIBITORS (VARIANTS), USE THEREOF IN TREATING ONCOLOGICAL DISEASES AND A PHARMACEUTICAL COMPOSITION BASED THEREON

The present invention relates to the treatment of oncological, chronic inflammatory and similar diseases with the aid of new families of chemical compounds having improved efficiency with regard to the inhibition of Abl kinase and mutant forms thereof, as well as other therapeutically significant kinases. It describes protein kinase inhibitors in the form of compounds of general formula (I) and compounds of general formula (II), or a tautomer, an individual isomer, a mixture of isomers, a pharmaceutically acceptable salt, a solvate or a hydrate thereof.

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Reference£º
Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate

Synthetic Route of 17261-28-8, An article , which mentions 17261-28-8, molecular formula is C19H15O2P. The compound – 2-(Diphenylphosphino)benzoic acid played an important role in people’s production and life.

Synthesis of novel bidentate P-chiral diaminophosphine oxide preligands: Application to Pd-catalyzed asymmetric allylic substitution reactions

We developed a novel (S)-L-phenylalanine derived-bidentate chiral diaminophosphine oxide (DIAPHOX) preligand (S,SP)-9b, which was successfully applied to Pd-catalyzed asymmetric allylic alkylation and amination. Using the Pd-(S,SP)-9b catalyst system, asymmetric allylic alkylation and amination proceeded very smoothly, affording the corresponding products in excellent yield with high enantiomeric excess. It is noteworthy that both enantiomers were accessible with high enantiomeric purity using the structurally related DIAPHOX preligands (S,SP)-9b and a monodentate chiral diaminophosphine oxide preligand (S,RP)-10a, both of which can be prepared from a single chiral source, (S)-L-phenylalanine.

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Reference£º
Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate

Reference of 1038-95-5, Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 1038-95-5, Name is Tri-p-tolylphosphine, molecular formula is C21H21P. In a Article£¬once mentioned of 1038-95-5

Olefination of 3-diazopiperidin-2-one

New conditions have been developed for the olefination of diazo compounds catalysed by methyl trioxorhenium. The new system is suitable for unreactive diazo compounds and its utility is demonstrated by the olefination of 3-diazopiperidin-2-one with a range of aromatic, heterocyclic and alkylaldehydes.

The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 1038-95-5 is helpful to your research., Reference of 1038-95-5

Reference£º
Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate

Synthetic Route of 1038-95-5. Let¡¯s face it, organic chemistry can seem difficult to learn. Especially from a beginner¡¯s point of view. Like 1038-95-5, Name is Tri-p-tolylphosphine. In a document type is Patent, introducing its new discovery.

2-HETEROARYL AND 2-HETEROCYCLIC BENZOXAZOLES AS PDE IV INHIBITORS FOR THE TREATMENT OF ASTHMA

Novel compounds which are effective PDE IV inhibitors are disclosed. The present invention is directed to compounds having the general formula I wherein: X is a halogen; Q is -CH2-CH2-, -CH2-, a single or a double bond, or -NR1-; R is a C3-7 monocyclic ring structure containing at least one carbon atom and comprising one or more chalcogen atoms selected from the group consisting of nitrogen, sulfur and oxygen, wherein the monocyclic ring is unsaturated, partially unsaturated or saturated, and is optionally substituted with alkyl, cycloalkyl, alkoxy, cycloalkoxy, hydroxy or halogen; or is a bicyclic structure, comprised of a phenyl ring fused to a monocyclic ring structure as defined above, or comprised of two fused monocyclic ring structures, each ring containing at least one carbon atom and comprising one or more chalcogen atoms selected from the group consisting of nitrogen, sulfur and oxygen, wherein the monocyclic ring is unsaturated, partially unsaturated or saturated, and is optionally substituted with alkyl, cycloalkyl, alkoxy, cycloalkoxy, hydroxy or halogen. R2 is a phenyl group or a C3-7 monocyclic ring structure containing at least one carbon atom and comprising one or more chalcogen atoms selected from the group consisting of nitrogen, sulfur and oxygen, wherein the monocyclic ring may be unsaturated, partially unsaturated or saturated, and is optionally substituted with alkyl, cycloalkyl, alkoxy, cycloalkoxy, hydroxy or halogen

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Reference£º
Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate

Reference of 17261-28-8. Chemistry is an experimental science, and the best way to enjoy it and learn about it is performing experiments.Introducing a new discovery about 17261-28-8, Name is 2-(Diphenylphosphino)benzoic acid

Iterative deoxypropionate synthesis based on a copper-mediated directed allylic substitution

Can’t have too much of a good thing: A flexible, iterative strategy based on a highly selective copper-mediated allylic substitution makes the preparation of any desired oligo(deoxypropionate) stereoisomer possible (see scheme; RDG = reagent-directing group). This approach differs from the established enolate-alkylation methodology through the reversed polarity of the reaction partners and avoids several problems associated with the latter method.

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Reference£º
Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate

213697-53-1, Name is 2′-(Dicyclohexylphosphino)-N,N-dimethyl-[1,1′-biphenyl]-2-amine, molecular formula is C26H36NP, belongs to chiral-phosphine-ligands compound, is a common compound. In a patnet, once mentioned the new application about 213697-53-1, SDS of cas: 213697-53-1

Novel thiophene amidines, compositions thereof, and methods of treating complement-mediated diseases and conditions

Disclosed is a method for treating the symptoms of an acute or chronic disorder mediated by the classical pathway of the complement cascade, comprising administering to a mammal in need of such treatment a therapeutically effective amount of a compound of Formula I 1or a solvate, hydrate or pharmaceutically acceptable salt thereof; wherein R1, R2, R3, R4 and R7 are defined in the specification, Z is SO or SO2, and Ar is an aromatic or heteroaromatic group as defined herein.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.SDS of cas: 213697-53-1. In my other articles, you can also check out more blogs about 213697-53-1

Reference£º
Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate