Category: 12150-46-8

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. 12150-46-8, 12150-46-8, C34H28FeP2. A document type is Article, introducing its new discovery.

Controlled acidolysis of hexacarbonyltris(mu-alkoxo)dirhenium(I) anions: Facile synthesis of hexacarbonylbis(mu-alkoxo)-[mu-1,1?-bis(diphenylphosphino)ferrocene] dirhenium(I) complexes and nonacarbonyltris(mu-methoxo)(mu3-methoxo)trirhenium(I)

The complexes [Re2(mu-OR)2(mu-dppf)(CO)6] (R = H, 1; Me, 2; Et, 3; Ph, 4) were synthesized by the controlled acidolysis of the anions [Re2(mu-OR)3(CO)6]- (R = H, Me, Et) and [Re2(mu-OH)(mu-OPh)2(CO)6]- (5), respectively, in the presence of dppf (1,1?-bis(diphenylphosphino)-ferrocene). The dppf ligands in complexes 1-4 undergo a twisting motion in solution at room temperature, which, in the case of 3, is correlated with the restricted rotation of the ethyl groups about the O-CH2 bonds. Complex 3 is an interesting example of an organometallic complex in which the two exchanging positions of the methylen protons of an ethyl group are nonequivalent, while the exchanging positions of the methyl group are equivalent. Controlled acidolysis of [Re2(mu-OMe)3(CO)6]- under 1 atm of CO pressure affords the complex [Re3(mu-OMe)3(mu3-OMe)(CO) 9]- (6), which consists of Re3 triangle held together by one face-capping and three bridging methoxo groups, with no Re-Re bonds. The crystal structures of 1, 3, 5, and 6, were determined by single-crystal X-ray diffraction analysis. The synthetic relationship of dirhenium-dialkoxo, dirhenium-trialkoxo, and trirhenium-tetraalkoxo entities is established.

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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

Let¡¯s face it, organic chemistry can seem difficult to learn. Especially from a beginner¡¯s point of view. Like 12150-46-8, Name is 1,1-Bis(diphenylphosphino)ferrocene. In a document type is Article, introducing its new discovery., 12150-46-8

Development of a scalable synthetic route towards a thrombin inhibitor, LB30057

Described is a scalable synthetic route towards LB30057 (1) which is based upon a chiron approach using methyl tyrosinate hydrochloride as a starting material. In situ protection of methyl tyrosinate to its N,O-bis-trimethylsilyl derivative and subsequent N-selective introduction of naphthalenesulfonyl group provided methyl N-2-naphthalenesulfonyltyrosinate (9). After the phenol group of 9 was Inflated to 10, nickel-catalyzed cyanation provided 11 in good yield. The acid chloride 11a was generated via hydrolysis of the ester group followed by the treatment with SOCl2, and then coupled with cyclopentylmethylamine to give the amide 15. Imidate formation followed by amidrazone generation and final salt formation with maleic acid afforded 1.

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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

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. 12150-46-8, C34H28FeP2. A document type is Article, introducing its new discovery., 12150-46-8

Effect of the metal-assisted assembling mode on the redox states of hexaazatriphenylene hexacarbonitrile

(Figure Presented) If the hat fits: The size of the ferrocene coligands used during the self-asssembly of hexaazatriphenylene hexacarbonitrile (hat-(CN)6) with CuI ions determines the coordination mode of the hat-(CN)6 ligand (bipyridine chelation or monodentate CN, see picture). The mode of coordination directly affects the oxidation state and the reduction potentials of the Hat-(CN)6 ligand.

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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

In an article, published in an article,authors is Aviles, Teresa, once mentioned the application of 12150-46-8, Name is 1,1-Bis(diphenylphosphino)ferrocene,molecular formula is C34H28FeP2, is a conventional compound. this article was the specific content is as follows.12150-46-8

Synthesis, X-ray structures, electrochemistry, magnetic properties, and theoretical studies of the novel monomeric [CoI2(dppfO2)] and polymeric chain [CoI2(mu-dppfO2)n]

The new compound [Co(eta5-C5H5)(dppf-P,P?)I]I, 1, was synthesised by the stoichiometric reaction of the Co(III) complex [Co(eta5-C5H5)(CO)I2], 2, with 1,1?-bis(diphenylphosphino)ferrocene (dppf) in CH2Cl2, and was characterised by multinuclear NMR spectroscopy. Exposure to air of THF or CH2Cl2 solutions of compound 1 gave, in an unexpected way, a polymeric chain comprising bridging 1,1?-bis(oxodiphenylphosphoranyl)ferrocene (dppfO2) joining tetrahedral Co(II) units [CoI2(mu-dppfO2)]n, 3. Attempts to obtain the polymeric chain 3 by the direct reaction of dppfO2 with CoI2, in CH2Cl2, gave instead the monomeric compound [CoI2(dppfO2)], 4, in which dppfO2 is coordinated in a chelating mode. The structural characterisation of compounds 2, 3, and 4 was carried out by single crystal X-ray diffraction studies. The magnetic behaviour of [CoI2(dppfO2)] and [CoI2(mu-dppfO2)]n was studied, and the results are consistent with tetrahedral S = 3/2 CoII, possessing a 4A2 ground state, and S = 0 FeII. In these compounds, CoII negative zero field splittings were determined from an analysis of the magnetic susceptibility temperature dependence, with D/k = -13 and -14 K for CoI2(dppfO2) and [CoI2(mu-dppfO2)]n, respectively. DFT calculations were performed in order to understand the electronic structure of [Co(eta5-C5H5)(dppf-P,P?)I]I, 1, as well as that of the paramagnetic specie [CoI2(dppfO2)], 4. The [CoI2(mu-dppfO2)]n chain was also analysed and found to behave very similarly to the monomeric iodine derivative 4. The calculations showed the unpaired electrons to be localized on the Co(II) centre in all these species. The rather complicated electrochemical behaviour exhibited by the dppf complex [CoIII(eta5-C5H5)(dppf-P,P?) I]I and by [Co(dppfO2)I2] is discussed.

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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

12150-46-8. Chemistry is the experimental science by definition. We want to make observations to prove hypothesis. For this purpose, we perform experiments in the lab. 12150-46-8, Name is 1,1-Bis(diphenylphosphino)ferrocene,introducing its new discovery.

Pentamethylcyclopentadienyl ruthenium(II) complexes containing chiral diphosphines: Synthesis, characterisation and electrochemical behaviour. X-ray structure of (eta5-C5Me5)Ru{(S,S)-Ph 2PCH(CH3)CH(CH3)PPh;2}Cl

Some pentamethylcyclopentadienyl ruthenium(II) diphosphine chloride complexes have been prepared by ligand exchange starting with the parent triphenylphosphine derivatives and their reactivities compared with those of the corresponding cyclopentadienyl compounds. The pentamethyl ligand causes a greater extent of asymmetric induction when the (R)-prophos and (R)-phenphos ligands are used as well as a higher lability of the stereochemistry at the stereogenic ruthenium centre. A shift of about 200 mV in the oxidation potential is caused by the substitution at the penta-hapto ligand. The order of basicity of the diphosphine ligands was also evaluated and was found to be consistent with previous determinations. The crystal structure of (eta5-C5Me)Ru{(S,S)-chiraphos}C1 shows a coordination around the ruthenium atom similar to that found for the (eta5-C5H5)Ru{(S,S)-chiraphos}Cl complex.

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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

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.12150-46-8,1,1-Bis(diphenylphosphino)ferrocene,as a common compound, the synthetic route is as follows.

General procedure: Complex 1b was prepared by a ligand substitution reaction. A mixture of triphenylphosphine (51.8 mg, 0.197 mmol) and [Pt{N(COPh)CH2COO}(cod)] 1a (46.5 mg, 0.097 mmol) was dissolved in dichloromethane (4 mL) and left to stand for 5 min., then filtered through a cotton-plugged glass Pasteur pipette and washed through with a further 0.5 mL dichloromethane. Petroleum spirits (25 mL) was added, giving white needle crystals on standing overnight. Upon subsequent evaporation of around one third of the solvent, further product formed which, following removal of the supernatant, was washed with petroleum spirits (ca. 2 mL) and dried under vacuum for 3 h to give 95.7 mg (97percent) of 1b¡¤1.5CH2Cl2.

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Article; Sim, Sophie A.; Saunders, Graham C.; Lane, Joseph R.; Henderson, William; Inorganica Chimica Acta; vol. 450; (2016); p. 285 – 292;,
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

12150-46-8, 1,1-Bis(diphenylphosphino)ferrocene is a chiral-phosphine-ligands compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

The heteroleptic nickel, palladium and platinum complexes (1?10) were prepared according to the general procedure shown in Scheme 1. To a stirring 15 ml methanolic solution of the ligand K2(p-CH3C6H4SO2N=CS2)¡¤2H2O (0.18 g, 0.5 mmol), K2(p-ClC6H4SO2N=CS2)¡¤2H2O (0.19 g, 0.5 mmol), K2(p-BrC6H4SO2N=CS2)¡¤2H2O (0.21 g, 0.5 mmol) or K2C2H5OCO(CN)CCS2 (0.13 g, 0.5 mmol) a 10ml aqueous solution of NiCl2¡¤6H2O (0.12 g, 0.5 mmol), K2PdCl4 (0.163 g, 0.5 mmol) or K2PtCl4 (0.21 g, 0.5 mmol) was added and in each case the reaction mixture was stirred for half an hour to get a clear solution. To this 25 ml solution was added a 10 ml dichloromethane solution of 1,1?-bis(diphenylphosphino)ferrocene (0.28 g, 0.5 mmol) with vigorous stirring and then further stirred for 12 h in the case of Ni and 24 h for Pd and Pt complexes. The volume of the reaction mixtures were reduced to 15 ml on rotary evaporator and the solid products thus obtained were filtered off and washed with H2O?CH3OH (40:60 v/v) and dried in vacuo over calcium chloride.

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Article; Singh, Santosh K.; Chauhan, Ratna; Diwan, Kiran; Drew, Michael G.B.; Bahadur, Lal; Singh, Nanhai; Journal of Organometallic Chemistry; vol. 745-746; (2013); p. 190 – 200;,
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

12150-46-8, 1,1-Bis(diphenylphosphino)ferrocene is a chiral-phosphine-ligands compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

General procedure: The reactions were run in a CEM Corp. MARS microwave fitted with a fiber optic temperature probe and a port on top for a reflux condenser.1 mmol of Mo(CO)6 and dppe (0.425 g, 1.1 mmol) were combined with 20 mL of 1-propanol in a two-neck 100 mL RB flask. To this mixture was added NaBH4 (0.128 g, 3.3 mmol). The flaskwas placed in themicrowave and a reflux condenser attached through a hole in the top of the microwave. The mixture was sparged with nitrogen. The mixture was heated under nitrogen at 400 W for 1.5 min to reach reflux temperature. Once the reflux temperature was reached the microwave power was reduced and the temperature maintained for 18 min. The mixture was cooled to room temperature and 2?4 mL of water was added to the reaction to dissolve excess NaBH4 and promote product precipitation. The reaction was cooled ?10 ¡ãC for several hours. The light yellow complex was filtered in air and washed with 2¡Á5 mL of petroleum ether/diethyl ether(1:1) mixture resulting in 580 mg of Mo(CO)4dppe after drying, a 95percent yield.

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Reference£º
Article; Birdwhistell, Kurt R.; Schulz, Brian E.; Dizon, Paula M.; Inorganic Chemistry Communications; vol. 26; (2012); p. 69 – 71;,
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

12150-46-8, 1,1-Bis(diphenylphosphino)ferrocene is a chiral-phosphine-ligands compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

DPPF (55 mg, 0.1 mmol) was added to a rapidly stirred, 10 mlCH2Cl2 suspension of RuCl2(PPh3)3 (96 mg, 0.1 mmol). A colorchange from purple-black to red was observed within a few minutes.The solutionwas stirred for 30 min, then a CH2Cl2 solution of2-aminopyridine (9.4 mg, 0.1 mmol) was added, giving an immediatecolor change to yellow-green. After a further 30 min, thesolvent was removed in vacuo and 5ml of diethyl ether (Et2O) wereadded. The yellow product was filtered off, washed twice withether (2 5 ml), and then dried under vacuum. Yield: 73 mg (93percent).Anal. Calcd for C39H34Cl2N2P2FeRu: C, 57.07; H, 4.15; N, 3.41. Found:C, 56.73; H, 4.16; N, 3.42. 1H NMR (DMSO?d6): 4.32 (s, br. 8H, C5H4),4.55 (s, br. 2H, -NH2, Py), 6.44 (m, 1H, CH, Py), 7.20e7.34 (m, 20H,Ph), 7.38 (m, 1H, CH, Py), 7.87 (m, 1H, CH, Py). 13C{1H} NMR(DMSO?d6): 72.1 (s, C5H4), 75.0 (s, C5H4), 79.1 (s, C5H4), 107.9 (s, Py),111.7 (s, Py), 126.2 (d, 2JC-P 5.0, Ph), 128.7 (d, 1JC-P 6.5, Ph), 133.2(d, 1JC-P 19.0, Ph), 135.8 (d, 1JC-P 98.0, Ph), 136.8 (s, Py), 147.6 (s,Py),. 159.7 (s, Py). 13C{1H,31P} NMR (DMSO?d6): the above 13C{1H }signals became singlets. 31P{1H} NMR (DMSO?d6): 32.34 (br, s). IR(cm1): 3298, 3188, 3102, 3057 (nN-H and nC-H); 1875, 1602, 1533,1478, 1433 (nCC, and C-H, N-H bending), 1154, 1095, 1032, 747, 697

12150-46-8, 12150-46-8 1,1-Bis(diphenylphosphino)ferrocene 51341936, achiral-phosphine-ligands compound, is more and more widely used in various fields.

Reference£º
Article; Ge, Sai; Zhang, Jin; Zhao, Jianguo; Ulhaq, Imran; Ma, Guibin; McDonald, Robert; Journal of Organometallic Chemistry; vol. 879; (2019); p. 7 – 14;,
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

12150-46-8, 1,1-Bis(diphenylphosphino)ferrocene is a chiral-phosphine-ligands compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

To a solutionof [C7H7][BF4] (64.6 mg, 0.363 mmol), in CHCl3(13 mL) dppf (100.1 mg, 0.181 mmol), was added and the solution was stirred atreflux for 7 hours. The solution was cooled and then stirred at roomtemperature for 13 hours. An orange solid precipitated and was collected byfiltration and dried under vacuum. Yield: 129.8 mg (79 percent).Anal. Calcd. For C48H42B2F8FeP2:C, 63.34; H, 4.65; N, 0.00. Found: C, 63.72; H, 4.95; N, 1H NMR (400 MHz, CDCl3,ppm): d 7.85 ? 7.65 (m, 20H, Ph), 6.37 (m, 4H, H4), 6.22 (m, 4H, H3), 5.07 (m, 4H, H2),4.84 (m, 4H, H5), 4.42 (m, 4H, H6), 4.18 (m, 2H, H1),.19F NMR (376.2 MHz, CDCl3,25 ¡ãC): delta -151.9 (s, F1). 31P{1H}-NMR(CDCl3, 25 C): 23.8 (s, P1).

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Article; Kruse, Samantha M.; Hurst, Stephanie K.; Tetrahedron Letters; vol. 56; 46; (2015); p. 6319 – 6322;,
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