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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.Brenstrum, Tim; Gerristma, David A.; Adjabeng, George M.; Frampton, Christopher S.; Britten, James; Robertson, Alan J.; McNulty, James; Capretta, Alfredo researched the compound: 1,3,5,7-Tetramethyl-6-phenyl-2,4,8-trioxa-6-phosphaadamantane( cas:97739-46-3 ).Application In Synthesis of 1,3,5,7-Tetramethyl-6-phenyl-2,4,8-trioxa-6-phosphaadamantane.They published the article 《Phosphaadamantanes as Ligands for Palladium Catalyzed Cross-Coupling Chemistry: Library Synthesis, Characterization, and Screening in the Suzuki Coupling of Alkyl Halides and Tosylates Containing β-Hydrogens with Boronic Acids and Alkylboranes》 about this compound( cas:97739-46-3 ) in Journal of Organic Chemistry. Keywords: phosphaadamantane ligand preparation Suzuki coupling catalyst. We’ll tell you more about this compound (cas:97739-46-3).

A 15-member library of phosphaadamantane ligands has been prepared via P-arylation of 1,3,5,7-tetramethyl-2,4,8-trioxa-6-phosphaadamantane. Screening of this tertiary phosphine collection has allowed for the rapid determination of the most suitable ligand, specifically 1,3,5,7-tetramethyl-6-(2,4-dimethoxyphenyl)-2,4,8-trioxa-6-phosphaadamantane, for facilitating Suzuki-type couplings of alkyl halides or tosylates containing β-hydrogens with either boronic acids or alkylboranes.

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The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: 1,3,5,7-Tetramethyl-6-phenyl-2,4,8-trioxa-6-phosphaadamantane, is researched, Molecular C16H21O3P, CAS is 97739-46-3, about Highly ligand-controlled regioselective Pd-catalyzed aminocarbonylation of styrenes with aminophenols, the main research direction is phenyl amide regioselective synthesis ligand controlled; styrene regioselective aminocarbonylation aminophenol palladium catalyst phosphine phosphaadamantane; aminocarbonylation reaction mechanism boronic acid chlorosalicylic additive.HPLC of Formula: 97739-46-3.

Achieving chemo- and regioselectivity simultaneously is challenging in organic synthesis. Transition metal-catalyzed reactions are effective in addressing this problem by the diverse ligand effect on the catalyst center. Ligand-controlled regioselective Pd-catalyzed carbonylation of styrenes with aminophenols was realized, chemoselectively affording amides. Using a combination of boronic acid and 5-chlorosalicylic acid as the additives, linear amides were obtained in high yields and selectivity using tris(4-methoxyphenyl)phosphine in acetonitrile, while branched amides were obtained in high yields and selectivity in butanone by changing the ligand to 1,3,5,7-tetramethyl-2,4,8-trioxa-6-phenyl-6-phosphaadamantane. Further studies show that the nature of the ligand is key to the regioselectivity. Cone angle and Tolman electronic parameter (TEP) have been correlated to the reactivity and regioselectivity. Studies on the acid additives show that different acids act as the proton source and the corresponding counterion can help enhance the reactivity and selectivity.

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SDS of cas: 97739-46-3. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: 1,3,5,7-Tetramethyl-6-phenyl-2,4,8-trioxa-6-phosphaadamantane, is researched, Molecular C16H21O3P, CAS is 97739-46-3, about Synthesis of Dibenzo[b,f][1,4]oxazepin-11(10H)-ones via Intramolecular Cyclocarbonylation Reactions Using PdI2/Cytop 292 as the Catalytic System. Author is Yang, Qian; Cao, Hong; Robertson, Al; Alper, Howard.

The intramol. cyclocarbonylation of substituted 2-(2-iodophenoxy)anilines, e.g. I, was catalyzed by PdI2 and 1,3,5,7-tetramethyl-6-phenyl-2,4,8-trioxa-6-phospha-adamantane (Cytop 292) in an efficient manner. A series of substituted dibenzo[b,f][1,4]oxazepin-11(10H)-ones, e.g. II, were prepared in good yields under mild reaction conditions.

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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 Palladium-catalyzed aminocarbonylation of aryl iodides using aqueous ammonia, the main research direction is palladium catalyzed aminocarbonylation aryl iodide ammonia.Name: 1,3,5,7-Tetramethyl-6-phenyl-2,4,8-trioxa-6-phosphaadamantane.

Aminocarbonylation of aromatic iodides using aqueous ammonia in toluene has been developed. Various primary aromatic amides have been efficiently synthesized in good to excellent yields in the presence of catalytic quantities of Pd(OAc)2/CYTOP292. The usage of aqueous ammonia avoids the handling of two gases in the reaction.

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HPLC of Formula: 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 Complex Polyheterocycles and the Stereochemical Reassignment of Pileamartine A via Aza-Heck Triggered Aryl C-H Functionalization Cascades. Author is Jones, Benjamin T.; Garcia-Carceles, Javier; Caiger, Lewis; Hazelden, Ian R.; Lewis, Richard J.; Langer, Thomas; Bower, John F..

Structurally complex benzo- and spiro-fused N-polyheterocycles can be accessed via intramol. Pd(0)-catalyzed alkene 1,2-aminoarylation reactions. The method uses N-(pentafluorobenzoyloxy)carbamates as the initiating motif, and this allows aza-Heck-type alkene amino-palladation in advance of C-H palladation of the aromatic component. The chem. is showcased in the first total synthesis of the complex alkaloid (+)-pileamartine A, I, which has resulted in the reassignment of its absolute stereochem.

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The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Nuclear spin-spin relaxation》. Authors are Lipsicas, M.; Hartlang, A..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).Formula: C16H21O3P. Through the article, more information about this compound (cas:97739-46-3) is conveyed.

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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In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called An empirical study of phosphine ligands for the methoxycarbonylation of medium-chain alkenes, published in 2015, which mentions a compound: 97739-46-3, mainly applied to palladium phosphine complex octene methoxycarbonylation isomerization catalyst kinetics, Reference of 1,3,5,7-Tetramethyl-6-phenyl-2,4,8-trioxa-6-phosphaadamantane.

The methoxycarbonylation reaction provides a route to the synthesis of esters from medium-chain alkenes that may be used as fuel supplements. However, the known productive catalytic systems are expensive and/or unstable at elevated temperatures Most of the data available on the methoxycarbonylation of alkenes is derived from ethylene and styrene as substrates. To broaden the scope, we conducted a comparative study of a range of phosphine ligands under comparable conditions for the methoxycarbonylation of 1-octene. The results demonstrate that a number of ligand structural motifs facilitate the process effectually. Furthermore, the critical importance of alkene isomerization and the acid/ligand and Pd/ligand ratios are presented.

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The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Aromatic silicon systems. II. The silacyclopentadienide anion》. Authors are Benkeser, Robert A.; Grossman, Richard F.; Stanton, Garth M..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.

cf. ibid. 4723. Silacyclopentadiene (I) has been found to react directly with K forming H and II. Comparison of the nuclear magnetic resonance spectra of I and II provides graphic evidence that it is the silanic hydrogens which are replaced by the metal in this reaction. Significantly, divinylsilane (the open chain analog of I) does not react with K at any appreciable rate under comparable conditions. This suggests that resonance stabilization of the silacyclopentadienide anion is providing a driving force for this reaction. II reacts with bromobenzene forming a mixture of 1-phenyl- and 1,1-diphenylsilacydopentadiene. The structure of the latter two compounds was established by reducing them catalytically to phenylated silacydopentanes which, in turn, could be prepared by unequivocal routes. II is colored in tetrahydrofuran solutions and possesses a spectrum which is quite similar to K in the visible region. All of the foregoing observations point to some measure of resonance stabilization in the silacyclopentadienide ring system, suggesting that the “”Hueckel rule”” will enjoy some success in predicting aromatic character for certain silicon ring systems

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Ullah, Ehsan; McNulty, James; Robertson, Al 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 ).Formula: C16H21O3P. 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 Pd catalyst system is described that allows very high chemoselective monoarylation on all three isomers of dichlorobenzene. Direct application of these commodity chems. to high-value ligands, anilines, azides, and carbazoles was achieved through this process discovery.

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HPLC of Formula: 97739-46-3. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: 1,3,5,7-Tetramethyl-6-phenyl-2,4,8-trioxa-6-phosphaadamantane, is researched, Molecular C16H21O3P, CAS is 97739-46-3, about Phenylphosphatrioxa-adamantanes: bulky, robust, electron-poor ligands that give very efficient rhodium(I) hydroformylation catalysts. Author is Baber, R. Angharad; Clarke, Matthew L.; Heslop, Katie M.; Marr, Andrew C.; Orpen, A. Guy; Pringle, Paul G.; Ward, Andrew; Zambrano-Williams, Damaris E..

The cage phosphines 1,3,5,7-tetramethyl-6-phenyl-2,4,8-trioxa-6-phosphaadamantane (1a) and 1,3,5,7-tetraethyl-6-phenyl-2,4,8,trioxa-6-phosphaadamantane (1b) were made by the acid catalyzed addition of PhPH2 to the appropriate β-diketones; the acid used (HCl, H3PO4 or H2SO4) and its concentration affect the rate and selectivity of these condensation reactions. Phosphines 1a and 1b react with [PdCl2(NCPh)2] to form trans-[PdCl2(1a)2] (2a) and trans-[PdCl2(1b)2] (2b) as mixtures of rac and meso diastereoisomers. The Pt(II) chem. is more complicated and when 1a or 1b is added to [PtCl2(cod)], equilibrium mixtures of trans-[PtCl2L2] and [Pt2Cl4L2] (L = 1a or 1b) are formed in CH2Cl2 solution Meso/rac mixtures of trans-[MCl(CO)(1a)2] M = Ir (6a) or Rh (7a) are formed upon treatment of MCl3·nH2O with an excess of 1a and the anionic Co complex [NHEt3][CoCl3(1a)] (9) was isolated from the product formed by CoCl2·6H2O and 1a. The νCO values from the IR spectra of 6a and 7a suggest that 1a resembles a phosphonite in its bonding to Rh and Ir. Crystal structures of meso-2a, meso-2b, rac-6a and 9 are reported and in each case a small intracage C-P-C angle of ∼94° is observed and this may partly explain the bonding characteristics of ligands 1a and 1b. The cone angles for 1a and 1b are similar and large (∼200°). Rh complexes of ligands 1a and 1b are hydroformylation catalysts with similarly high activity to catalysts derived from phosphites. The catalysts derived from 1a and 1b gave unusually low linear selectivity in the hydroformylation of hexenes. This feature was further exploited in quaternary-selective hydroformylations of unsaturated esters; catalysts derived from 1a give better yields and regioselectivities than any previously reported catalyst.

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