Category: 97739-46-3

Awuah, Emelia; Capretta, Alfredo published an article about the compound: 1,3,5,7-Tetramethyl-6-phenyl-2,4,8-trioxa-6-phosphaadamantane( cas:97739-46-3,SMILESS:CC1(C2)OC(C3)(C)OC2(C)OC3(C)P1C4=CC=CC=C4 ).Quality Control of 1,3,5,7-Tetramethyl-6-phenyl-2,4,8-trioxa-6-phosphaadamantane. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:97739-46-3) through the article.

Synthetic methods for the preparation of maleimide and α,β-unsaturated-γ-butyrolactam compound collections are described. These routes take advantage of Pd cross-coupling and conjugate addition/elimination reactions to permit the facile production of bisaryl-maleimides, anilinoaryl-maleimides, and bisanilino-maleimides while allowing control over the synthesis of sym. or nonsym. derivatives Similarly, the chem. developed allows for the generation of bisaryl substituted α,β-unsaturated-γ-butyrolactams. The scope and limitations of the approaches are presented.

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Tetrahydropyran – Wikipedia,
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The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: 1,3,5,7-Tetramethyl-6-phenyl-2,4,8-trioxa-6-phosphaadamantane( cas:97739-46-3 ) is researched.Recommanded Product: 97739-46-3.Ohnmacht, Stephan A.; Brenstrum, Tim; Bleicher, Konrad H.; McNulty, James; Capretta, Alfredo published the article 《Solid-phase Suzuki cross-coupling reactions using a phosphine ligand based on a phospha-adamantane framework》 about this compound( cas:97739-46-3 ) in Tetrahedron Letters. Keywords: polymer supported haloarene arylboronic acid coupling palladium phospha adamantane; biaryl preparation; palladium phospha adamantane Suzuki coupling catalyst. Let’s learn more about this compound (cas:97739-46-3).

The use of a catalyst system based on Pd2dba3·CHCl3 and 1,3,5,7-tetramethyl-2,4,8-trioxa-6-phenyl-6-phospha-adamantane allowed for Suzuki coupling aryl halides with an array of boronic acids on a solid-phase platform. The reactions can be carried out at room temperature with low palladium loadings in high yields.

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Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Canadian Journal of Physics called Nuclear spin-spin relaxation, Author is Lipsicas, M.; Hartlang, A., which mentions a compound: 97739-46-3, SMILESS is CC1(C2)OC(C3)(C)OC2(C)OC3(C)P1C4=CC=CC=C4, Molecular C16H21O3P, Recommanded Product: 97739-46-3.

The nuclear spin-spin relaxation time, T2, in H at 77.5°K., on a gas sample of approx. 100 Amagats d., was more accurately determined equal to the spin-lattice relaxation time, T1, within ±4%, correcting a previous report (CA 56, 4271h).

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Tetrahydropyran – Wikipedia,
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Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 97739-46-3, is researched, Molecular C16H21O3P, about A modular family of phosphine-phosphoramidite ligands and their hydroformylation catalysts: steric tuning impacts upon the coordination geometry of trigonal bipyramidal complexes of type [Rh(H)(CO)2(P-P*)], the main research direction is phosphine phosphoramidite ferrocene planar chiral ligand hydroformylation catalyst preparation; rhodium phosphine phosphoramidite ferrocene planar chiral complex hydroformylation catalyst; stereoselective regioselective hydroformylation styrene butenenitrile phosphoramidite ferrocene chiral catalyst.Computed Properties of C16H21O3P.

Four new ferrocene-based planar-chiral phosphine-phosphoramidite bidentate ligands I (1-4; R = Me, PhCH2, R1 = Me, tBu; R2 = Me, tBu; R3 = H, Me) have been synthesized and studied in rhodium-catalyzed hydroformylation. Variable temperature NMR studies have been used along with HPIR to investigate the coordination mode of the trigonal bipyramidal complexes formed from [Rh(acac)(CO)2], ligand and syngas. It was found that small changes to the ligand structure have a large effect on the geometry of the active catalytic species. The rhodium catalysts of these new ligands were found to give unusually high iso-selectivity in the hydroformylation of propene and 1-octene.

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Tetrahydropyran – Wikipedia,
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Amezquita-Valencia, Manuel; Alper, Howard published an article about the compound: 1,3,5,7-Tetramethyl-6-phenyl-2,4,8-trioxa-6-phosphaadamantane( cas:97739-46-3,SMILESS:CC1(C2)OC(C3)(C)OC2(C)OC3(C)P1C4=CC=CC=C4 ).HPLC of Formula: 97739-46-3. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:97739-46-3) through the article.

A simple, efficient, and regioselective synthesis of 3-methyl-3,4-dihydrocoumarins is reported. The reaction of 2-allyl phenols with synthesis gas was catalyzed by PdI2, and 1,3,5,7-tetramethyl-6-phenyl-2,4,8-trioxa-6-phosphaadamantane and 1,3,5,7-tetramethyl-6-tetradecyl-2,4,8-trioxa-6-phosphaadamantane were effective as ligands, affording good product selectivity in all cases.

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The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Effect of isotopic composition on electrical resistance of lithium》. Authors are Leffler, R. G.; Montgomery, D. J..The article about the compound:1,3,5,7-Tetramethyl-6-phenyl-2,4,8-trioxa-6-phosphaadamantanecas:97739-46-3,SMILESS:CC1(C2)OC(C3)(C)OC2(C)OC3(C)P1C4=CC=CC=C4).SDS of cas: 97739-46-3. Through the article, more information about this compound (cas:97739-46-3) is conveyed.

The elec. resistance of solid metallic Li containing varying proportions of Li6 and Li7 was measured at 4.2-295°K. For the isotopically pure substances, the main features of the behavior agree with the predictions of the Bloch-Grueneisen law, the characteristic temperature is inversely proportional to the square root of the mass. For the isotopically impure substances, the behavior of the resistance as a function of temperature can be described just as that of an isotopically pure substance with a mass dependent on the isotopic composition In fact, the temperature dependence of resistance for all compositions, including the pure isotopes, can be represented as a universal curve by use of appropriate scaling factors depending on average isotopic mass. From the present data the arithmetic mean cannot be preferred over the harmonic mean isotopic mass, and hence one cannot decide between certain theoretical proposals concerned with the effect of isotopic impurities on lattice vibration spectra. No need exists to invoke a scattering mechanism that looks upon isotopes as introducing imperfections in the lattice; rather, their presence merely modifies the lattice vibration spectrum. The effect of the martensitic transition at low temperatures is barely, if at all, discernible.

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Tetrahydropyran – Wikipedia,
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So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Klinkenberg, Jessica L.; Lawry, Kevin P. researched the compound: 1,3,5,7-Tetramethyl-6-phenyl-2,4,8-trioxa-6-phosphaadamantane( cas:97739-46-3 ).Electric Literature of C16H21O3P.They published the article 《Sterically Encumbered and Poorly Electron-Donating Oxaphosphaadamantane Ligands for the Pd-Catalyzed Telomerization of Butadiene with Methanol》 about this compound( cas:97739-46-3 ) in Organic Process Research & Development. Keywords: methoxyoctadiene preparation telomerization butadiene methanol palladium catalyst. We’ll tell you more about this compound (cas:97739-46-3).

Oxaphosphaadamantane ligands bearing a variety of aryl and alkyl substituents were synthesized as catalyst promoters in the Pd-catalyzed telomerization of butadiene with methanol. At high methanol concentrations (14 M), ligands with electron-donating substituents on the aryl ring generate catalysts that lead to some of the highest conversions of butadiene and selectivities for 1-methoxy-2,7-octadiene under the conditions tested. Specifically, the ligand 1,3,5,7-tetramethyl-6-(2-methoxyphenyl)-2,4,8-trioxa-6-phosphaadamantane, when combined with a Pd(II) precursor, forms a catalyst that converts 96% of butadiene with 94% selectivity for 1-methoxy-2,7-octadiene at 70 °C and is highly active for telomerization at a low reaction temperature (40 °C).

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Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Advanced Synthesis & Catalysis called Synthesis of β2,2-Amino esters via Rh-Catalysed Regioselective Hydroaminomethylation, Author is Cunillera, Anton; Ruiz, Aurora; Godard, Cyril, which mentions a compound: 97739-46-3, SMILESS is CC1(C2)OC(C3)(C)OC2(C)OC3(C)P1C4=CC=CC=C4, Molecular C16H21O3P, Computed Properties of C16H21O3P.

The synthesis of β2,2-amino esters was successfully achieved via Rh-catalyzed regioselective hydroaminomethylation of Me methacrylate with secondary amines using the neutral precursor Rh(acac)(CO)2. In this process, the presence of mol. sieves was crucial in order to access the final amino ester. For the synthesis of products containing aniline derivatives, the use of the cationic precursor [Rh(COD)2]BF4 and MeCgPPh phosphine I as ligand was necessary in a mixture of toluene/DCE as solvent. Effects of the steric and electronic properties of the amines were observed Interestingly, the poisoning effect of CO in the hydrogenation of the imine intermediate was observed when benzyl amine was used.

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Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics

Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Article, Chemistry – A European Journal called Highly regioselective rhodium-catalyzed hydroformylation of unsaturated esters: The first practical method for quaternary selective carbonylation, Author is Clarke, Matthew L.; Roff, Geoffrey J., which mentions a compound: 97739-46-3, SMILESS is CC1(C2)OC(C3)(C)OC2(C)OC3(C)P1C4=CC=CC=C4, Molecular C16H21O3P, HPLC of Formula: 97739-46-3.

Highly regioselective hydroformylation of unsaturated esters can be achieved when a highly reactive, ligand-modified, rhodium catalyst is employed near ambient temperatures (15-50°C) and pressures over 30 bar. The use of 1,3,5,7-tetramethyl-2,4,8-trioxa-6-phosphaadamantane shows distinct advantages over other commonly applied phosphanes in terms of reaction rate, and regio- and chemoselectivity. Hydroformylation of a range 1,1-di-, and 1,1,2-trisubstituted unsaturated esters yields quaternary aldehydes that are forbidden products according to Keulemans Rule. The aldehydes can be reductively aminated with mol. hydrogen to give β-amino acid esters in high yield. The overall green chem. process involves converting terminal alkynes into unusual β-amino acid esters with only water generated as an essential byproduct. This catalytic system has also been applied to the hydroformylation of simple 1,2-disubstituted unsaturated esters, which were hydroformylated with excellent α-selectivity and good chemoselectivity.

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Related Products of 97739-46-3. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: 1,3,5,7-Tetramethyl-6-phenyl-2,4,8-trioxa-6-phosphaadamantane, is researched, Molecular C16H21O3P, CAS is 97739-46-3, about 8-Hydroxy-1,3,5,7-tetramethyl-2,4,6-trioxa-8-phosphatricyclo[3.3.1.13,7]decane 8-oxide. Author is Mondal, Sujit.

Properties and applications of 8-hydroxy-1,3,5,7-tetramethyl-2,4,6-trioxa-8-phosphatricyclo[3.3.1.13,7]decane 8-oxide, a reagent used as an intermediate for the resolution of the parent compound 1,3,5,7-tetramethyl-2,4,6-trioxa-8-phosphaadamantane [CgPH] and catalytically as a phosphine ligand or as a ligand precursor in a number of important organic reactions are reviewed. These reactions include Suzuki cross-coupling, Heck coupling, hydroformylation, hydrocyanation and catalytic hydrogenation, etc.

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