- Phenoxy imine substituted ruthenium complex as well as preparation and application thereof
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The invention relates to a phenoxy imine substituted ruthenium complex as well as preparation and application thereof, and the chemical general formula of the ruthenium complex is shown in the specification, in the formula, R1 is C1-C20 alkyl with a linear, branched or cyclic structure, or C7-C30 mono-or polyaryl substituted alkyl; R2 - R5 are respectively and independently hydrogen, or nitro, orC1-C20 straight-chain and branched-chain alkyl, or C7-C30 monoaryl or polyaryl substituted alkyl, or C6-C18 aryl, or halogen. Compared with the prior art, the method has the advantages that the effectof double-component catalysis can be achieved, polymerization starting can be effectively controlled, industrial operation is facilitated. Meanwhile, the catalyst has the advantages of being resistant to water, oxygen and impurities. In addition, phenoxy imine ligands are easy to synthesize, steric hindrance and the electronic effect of ligand substituents are easy to adjust, and the method is suitable for industrial production. The catalytic activity of ruthenium in a metal center can be effectively regulated and controlled, so that the catalyst is effectively regulated and controlled.
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Paragraph 0076-0080
(2020/11/23)
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- Formaldehyde-Free Polybenzoxazines for High Performance Thermosets
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We report the synthesis and ring-opening polymerization of new formaldehyde-free benzoxazines. The polybenzoxazines obtained displayed high thermal stability and high char yields. Data from the literature combined with our analyses by differential scanning calorimetry and thermogravimetric analyses gave deeper understanding about the use of aromatic aldehydes instead of formaldehyde for the generation of polybenzoxazines. Using pyrolysis coupled with gas chromatography/mass spectrometry (Py-GC/MS) at different temperatures, we provided qualitative data to propose some polymerization and degradation mechanisms associated with these new structures. A dialdehyde was also used for the first time in order to obtain difunctional monomers, instead of using diamines or bisphenols. Interestingly, we demonstrated that formaldehyde, which is a CMR (carcinogenic, mutagenic, and/or reprotoxic) substance, could be avoided for the synthesis of polybenzoxazines without any loss of thermal performance. Finally, some interesting structure-properties relationships are herein discussed. In particular, the use of benzyl amines, rather than aromatic amines, was found to significantly increase the char yields.
- Tavernier, Romain,Granado, Lérys,Foyer, Gabriel,David, Ghislain,Caillol, Sylvain
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p. 2557 - 2567
(2020/04/10)
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- Inclusion of Peripheral Basic Groups Activates Dormant Cobalt-Based Molecular Complexes for Catalytic H2 Evolution in Water
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The protein scaffold plays a key role during the enzymatic catalysis for metalloenzymes. Here we have rationally designed an enzyme-inspired outer coordination sphere in the form of protic functionalities, such as natural amino acid derived carboxylic acid and phenolic -OH groups, on the fringe of the cobalt-salen like complexes. This inclusion has enabled electrocatalytic H2 evolution for an otherwise inactive cobalt-salen like core. The complexes containing peripheral carboxylic acid groups exhibited unique pH-switchable catalytic H2 production that is connected with the pKa of the carboxylic acid group (~4.0), suggesting the crucial involvement of the carboxylate group during the catalytic activity. The one- and two-dimensional NMR results of the complexes have indicated the presence of a possible hydrogen bonding network, generated by those protic groups in aqueous solution. These results highlight that an inactive metal complex can be activated for specific small molecule activation via rational inclusion of outer coordination sphere functionalities.
- Khandelwal, Shikha,Zamader, Afridi,Nagayach, Vivek,Dolui, Dependu,Mir, Ab Qayoom,Dutta, Arnab
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p. 2334 - 2344
(2019/02/27)
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- Dinuclear iminophenoxide copper complexes in rac-lactide polymerisation
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Dinuclear bis(R′-(R′′-iminomethyl)phenoxide) copper complexes L2Cu2(μ-OR)2 were prepared from the reaction of copper methoxide with ROH and LH (ROH = dimethylaminoethanol or pyridylmethanol, R′ = H, 4,6-tBu, 1,3-Cl, R′′ = benzyl, cyclohexyl, diphenylmethyl and 2,6-dimethylphenyl). Preparation was complicated by formation of homoleptic L2Cu and only 9 of the 24 possible combinations could be prepared. All complexes were characterized by single crystal X-ray diffraction studies and crystallized as dinuclear penta-coordinated complexes. Homoleptic complexes L2Cu were inactive in lactide polymerization at room temperature. Most heteroleptic complexes showed modest to good activities with full conversion in less than 6 h at room temperature. Complexes with R′ = H showed poor molecular weight control, complexes with R′ = Cl were inactive in polymerization. In pyridylmethoxide-containing complexes, only one alkoxide initiated chain growth. All complexes produced atactic polymer.
- Daneshmand, Pargol,Pinon, Leena,Schaper, Frank
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p. 10147 - 10161
(2018/08/09)
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- Syntheses, structures and catalytic properties of ruthenium(II) nitrosyl complexes with bidentate and tetradentate Schiff base ligands
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Treatment of Ru(NO)Cl3·xH2O with 1 equiv. bidentate Schiff bases in the presence of triethylamine in DMF/THF afforded a series of anionic ruthenium(II) nitrosyl complexes of the type [Et3NH][Ru(κ2-N,O-LR)(NO)Cl3] (HLR = 2-butyliminomethyl-phenol 1, 2-(benzylimino-methyl)-phenol 2, 2-[(4-chloro-phenylimino)-methyl]-phenol 3, 2-[(4-nitro-phenylimino)-methyl]-phenol 4, 2-[(2,6-diisopropyl-phenylimino)-methyl]-phenol 5). Interaction of Ru(NO)Cl3·xH2O and 1 equiv. tetradentate Schiff bases under the same condition led to isolation of an anionic complex [Et3NH][Ru(κ2-N,O-L-CH2CH2-NOH)-(NO)Cl3] (HL-CH2CH2-NOH = N,N′-disalicylidene-1,2-ethanediamine 6) and a neutral complex [Ru(salen-phn)(NO)Cl] (H2salen-phn = N,N′-disalicylidene-1,2-phenyldiamine 7). The molecular structures of 1·?C2H5OH, 2–6, and 7·CH2Cl2 have been determined by single-crystal X-ray crystallography. Investigation of the catalytic properties of ruthenium(II) nitrosyl complexes 1–7 showed that they are efficient catalytic precursors for the transfer hydrogenation of acetophenone.
- Wu, Fule,Wang, Chang-Jiu,Lin, Hui,Jia, Ai-Quan,Zhang, Qian-Feng
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p. 718 - 723
(2017/12/26)
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- Investigation of the dinuclear effect of aluminum complexes in the ring-opening polymerization of ε-caprolactone
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A series of aluminum (Al) complexes bearing hydrazine-bridging Schiff base and salen ligands were synthesized and investigated as catalysts for the ring-opening polymerization of ε-caprolactone (CL). The introduction of steric bulky groups increases the catalytic activity of the corresponding mononuclear aluminum complex. However, the opposite phenomenon was observed in dinuclear Al complexes bearing salen ligands because the steric repulsion reduced the cooperative activation mechanism in the dinuclear Al system. Among these Al complexes, LN2Bu-Al2Me4 bearing a hydrazine-bridging Schiff base ligand had the highest catalytic activity, approximately 3- to 11-fold higher than that of dinuclear Al complexes bearing salen ligands and mononuclear Al complexes bearing Schiff base ligands. Density functional theory calculations revealed that the mechanism of the coordination of CL to one Al center was initiated by the benzyl alkoxide of another Al center.
- Hsu, Chiao-Yin,Tseng, Hsi-Ching,Vandavasi, Jaya Kishore,Lu, Wei-Yi,Wang, Li-Fang,Chiang, Michael Y.,Lai, Yi-Chun,Chen, Hsing-Yin,Chen, Hsuan-Ying
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p. 18851 - 18860
(2017/04/10)
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- Synthesis, structure and catalytic activity of bis(phenoxyiminato)iron(III) complexes in coupling reaction of CO2 and epoxides
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Here we described the synthesis and characterization of a series of new bis(phenoxyiminato)Fe(III)-chloro complexes using a variety of techniques, including: elemental analysis, IR-, MS(EI), UV-Vis-spectroscopy, and X-ray diffraction. A solid-state structure of bis(N-salicylidene-3-phenylpropylamine)iron(III)chloride reveals a distorted square-pyramid coordination with crystallographic C2-symmetry wherein chloride occupies the axial position. Isolated complexes were also evaluated as catalysts for a coupling reaction of CO2 and various epoxides, including propylene, 1-hexene, cyclohexene and styrene oxides to form corresponding cyclic carbonates. Accordingly, the ligand structure and the solvent used influenced the catalytic activity and marked enhancement in the activity was observed using DMF as a solvent. Under optimized reaction conditions (145 °C and 10 bar of CO2) bis(N-salicylidene-2-phenylethylamine)iron(III)chloride gave cyclopropylene carbonate with considerable high TON value (1029) within 3 h.
- Al-Qaisi, Feda'a,Genjang, Nevil,Nieger, Martin,Repo, Timo
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- Trans-Symmetric Dynamic Covalent Systems: Connected Transamination and Transimination Reactions
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The development of chemical transaminations as a new type of dynamic covalent reaction is described. The key 1,3-proton shift is under complete catalytic control and can be conducted orthogonally to, or simultaneous with, transimination in the presence of an amine to rapidly yield two-dimensional dynamic systems with a high degree of complexity evolution. The transamination-transimination systems are proven to be fully reversible, stable over several days, compatible with a range of functional groups, and highly tunable. Kinetic studies show transamination to be the rate-limiting reaction in the network. Furthermore, it was discovered that readily available quinuclidine is a highly potent catalyst for aldimine transaminations. This study demonstrates how connected dynamic reactions give rise to significantly larger systems than the unconnected counterparts, and shows how reversible isomerizations can be utilized as an effective diversity-generating element. Constant exchange: The development of chemical transaminations as a new type of dynamic covalent reactions is described (see figure). This study demonstrates how connected dynamic reactions give rise to significantly larger systems than the unconnected counterparts, and shows how reversible isomerizations can be utilized as an effective diversity-generating element.
- Schaufelberger, Fredrik,Hu, Lei,Ramstr?m, Olof
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p. 9776 - 9783
(2015/06/30)
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- Selective aerobic oxidation of alcohols to aldehydes, carboxylic acids, and imines catalyzed by a Ag-NHC complex
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Silver NHC catalysts have been developed for the selective oxidation of alcohols to aldehydes or carboxylic acids in the presence of BnMe3NOH or KOH under dry air. The aerobic oxidation conditions are mild, and the yield is excellent. Further tandem catalysis enables the one-pot synthesis of imines in excellent yield. Only 0.1 mol % of the catalyst is required.
- Han, Lei,Xing, Ping,Jiang, Biao
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supporting information
p. 3428 - 3431
(2014/07/21)
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- Morphology-tuned exceptional catalytic activity of porous-polymer-supported Mn3O4 in aerobic sp3 C-H bond oxidation of aromatic hydrocarbons and alcohols
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Mn3O4 nanomaterials with different morphologies (sphere, nanowire, and octahedron) embedded into functionalized nanoporous polymers were developed by a facile one-pot solvothermal technique at different temperatures. These Mn3O4-based hybrid materials could behave as heterogeneous nanocatalysts to perform sp3 C-H bond oxidation of aromatic hydrocarbons and alcohols with molecular oxygen as an economic oxidant. Catalytic activity could be effectively tuned by changing the morphology of incorporated Mn3O4 in nanoporous polymer. These Mn3O4-based hybrid materials exhibited remarkable catalytic performance for sp3 C-H bond oxidation as compared with bare Mn3O4 nanoparticles. Mn3O4 with octahedral morphology in nanoporous polymer exhibited the highest catalytic activity on account of its more exposed crystallographic planes and edges. These Mn3O4-based nanocatalysts could be recycled and reused for consecutive catalytic cycles without a significant loss of catalytic activity. Exceptional crystal facets: Nanoporous-polymer-supported Mn3O4 nanocatalysts (Mn@DVTA, DVTA=divinyltriallyl) with different morphologies are developed to catalyze aerobic sp3 C-H bond oxidation of aromatic hydrocarbons and alcohols. Among the different nanocatalysts, those with octahedral crystallite morphology exhibit outstanding catalytic performance.
- Mondal, John,Borah, Parijat,Sreejith, Sivaramapanicker,Nguyen, Kim Truc,Han, Xiguang,Ma, Xing,Zhao, Yanli
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p. 3518 - 3529
(2015/04/16)
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- Chitosan: A highly efficient renewable and recoverable bio-polymer catalyst for the expeditious synthesis of α-amino nitriles and imines under mild conditions
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Commercial chitosan-without any post-modification with active Bronsted or Lewis acid centers-was found to be a highly efficient renewable and recoverable bio-polymer catalyst for the rapid and convenient synthesis of α-amino nitriles or imines from aromatic aldehydes and amines under mild reaction conditions at room temperature in high to quantitative yields. The α-amino nitrile derivatives were prepared through the Strecker reaction using trimethylsilyl cyanide (TMSCN) and catalyzed by chitosan as a heterogeneous bifunctional organocatalyst.
- Dekamin, Mohammad G.,Azimoshan, Mojtaba,Ramezani, Leila
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supporting information
p. 811 - 820
(2013/04/10)
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- Selective imine formation from alcohols and amines catalyzed by polymer incarcerated gold/palladium alloy nanoparticles with molecular oxygen as an oxidant
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Carbon black stabilized, polymer incarcerated gold/palladium alloy nanoparticles (PICB-Au/Pd) act as an efficient, reusable heterogeneous catalyst for imine synthesis from alcohols and amines through a tandem oxidative process using molecular oxygen as the terminal oxidant.
- Soule, Jean-Francois,Miyamura, Hiroyuki,Kobayashi, Shu
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supporting information
p. 355 - 357
(2013/02/23)
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- Chemical design and synthesis of unsymmetrical diamino proligands employing a flexible route
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Three new unsymmetrical diamino proligands with a central alcohol group and four different pendant arms were obtained, employing a five step synthesis. The synthesis of these compounds involves inexpensive and commercially available reagents. The versatility of the synthetic route allows accessing to compartmental diamines with two chemically different adjacent coordination chambers.
- Ledesma, Gabriela N.,Signorella, Sandra R.
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supporting information
p. 5699 - 5702
(2012/10/30)
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- Functional models for enzyme-substrate adducts of catechol dioxygenase enzymes: The Lewis basicity of facially coordinating tridentate phenolate ligands tunes the rate of dioxygenation and product selectivity
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A few iron(III) 3,5-di-tert-butylcatecholate (DBC2-) adducts of the type [Fe(L)(DBC)(CH3OH)], where L is a tridentate substituted monophenolate ligand such as 2-((N-benzylpyrid-2-ylmethylamino)methyl)phenol (H(L1)), 2-((N-benzylpyrid-2-ylmethylamino)-methyl)-4,6-dimethylphenol (H(L2)), 2-((N-benzylpyrid-2-ylmethylamino)methyl)-4,6-di-tert-butylphenol (H(L3)) and 2-((N-benzylpyrid-2-ylmethylamino)methyl)-4-nitrophenol (H(L4)), have been isolated and characterized by elemental and ESI-MS analysis. The spectral and electrochemical properties and dioxygenase activities of the adducts have been studied in methanol solution. Upon varying the substituents on the phenolate ring from electron-releasing to electron-withdrawing, the redox potential of DBSQ/DBC2- couple is shifted to a more positive value indicating an increase in covalency of iron(III)-catecholate bonds. All the complexes elicit cleavage of DBC2- using molecular oxygen to afford both intra- (I) and extradiol (E) cleavage products with the product selectivity (E/I) varying in the range 0.3-1.9. Interestingly, the incorporation of electron-withdrawing substituents facilitates the regioselective extradiol cleavage of catechol while that of electron-releasing substituents facilitate the regioselective intradiol cleavage.
- Visvaganesan, Kusalendiran,Ramachitra, Somasundaram,Palaniandavar, Mallayan
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experimental part
p. 87 - 94
(2012/02/03)
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- Synthesis of imines, diimines and macrocyclic diimines as possible ligands, in aqueous solution
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Although it is recognized that the presence of water is disadvantageous for imine synthesis, we demonstrate that such synthesis can be effective in completely aqueous media, without any catalyst and under mild conditions. Thus, arylaryl, aryl-alkyl, alkyl-aryl and alkyl-alkyl monoimines as well as a large variety of diimines are obtained by direct condensation of the corresponding carbonyl compounds and amines, in water. The same process is used to synthesize macrocyclic diimines starting from methylene, ethylene, trimethylene and tetramethylene glycol bis(2-formylphenyl ether) and ethylene-, trimethylene- and tetramethylene-diamine, some of these macrocycles being known for their chelating properties.
- Simion, Alina,Simion, Cristian,Kanda, Tadeshige,Nagashima, Satoko,Mitoma, Yoshiharu,Yamada, Tomoko,Mimura, Keisuke,Tashiro, Masashi
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p. 2071 - 2078
(2007/10/03)
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- Ruthenium-(II)/-(III) terpyridine complexes incorporating imine functionalities. Synthesis, structure, spectroscopic and electrochemical properties
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A new class of ruthenium terpyridine complexes of the type [RuII(trpy)(L1-6)Cl] 1-6 (trpy=2,2':6',2''-terpyridine; L1-3=o--OC6H3(R)C(R')=NCH2C6H5 and L4-6=o--OC6H3(R)CH(R')N=NC6H5; where R=H or p-NO2 and R'=H or CH3) have been synthesized. The "free" ligands incorporating a NH spacer o--OC6H3(R)C(R')=NNHC6H5 (HL4-6) have undergone imine to azo tautomerism on co-ordination to the ruthenium terpyridine moiety in the complexes 4-6, whereas those having a CH2 spacer (HL1-3) remain unaltered on co-ordination. The diamagnetic, neutral complexes 1-6 exhibit strong MLCT transitions in the visible region and intraligand transitions in the UV region. A significant shift in MLCT band energy has been observed depending on the ligand field strength of the co-ordinated L. The complexes display a reversible ruthenium(III)-ruthenium (II) couple in the potential range of 0.12-0.63 V and a quasi-reversible ruthenium(IV)-ruthenium(III) couple in the range of 1.21-1.85 V versus SCE. The higher ligand field strength of the co-ordinated L4-6 compared to the co-ordinated L3- is reflected in the observed metal redox processes. The reduction of the co-ordinated terpyridine has been observed near -1.3 V. The complexes exhibit moderately strong emissions from the lowest energy MLCT bands in the range 661-690 nm in EtOH-MeOH (4:1 v/v) at 77 K. The quantum yields of the complexes (Φ=0.006-0.09) are found to be reasonably sensitive to the nature of the co-ordinated L. The oxidised complexes 3+ and 6+ have been isolated in the solid state as their perchlorate salts. The crystal structure of 3+ exhibits pseudo-octahedral trans geometry with regard to the relative disposition of the imine nitrogen (N4) of L3 and the central pyridyl group of the trpy ligand. The one-electron paramagnetic complexes show 1:1 conductivity and display ligand-to-metal charge transfer bands near 600 and 400 nm and intraligand transitions in the UV region. The observed rhombic EPR spectra at 77 K corresponding to the distorted octahedral geometry have been analysed to furnish values of axial (Δ) and rhombic (V) distortion parameters as well as the energies of the two expected ligand field transitions (ν1 and ν2) within the t2 shell.
- Mondal, Biplab,Chakraborty, Soma,Munshi, Pradip,Walawalkar, Mrinalini G.,Lahiri, Goutam Kumar
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p. 2327 - 2336
(2007/10/03)
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- Pyrrolidine and thiazolidine derivatives, their preparation and medicaments containing them
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This invention relates to compositions of formula: STR1 and their salts, their preparation and the medicaments containing them.
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- Phosphatase inhibitors. III. Benzylaminophosphonic acids as potent inhibitors of human prostatic acid phosphatase
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Further investigation of the structural requirements of a series of benzylphosphonic acid inhibitors of human prostatic acid phosphatase has led to the highly potent series of α-aminobenzylphosphonic acids. The α-benzylaminobenzylphosphonic acid, with an IC50 = 4 nM, exhibited a 3500-fold improvement in potency over the carbon analogue, α-phenylethyl. The enhanced potency may be due to a combination of four favorable interactions including those with the phosphate binding region, the presence the hydrophobic moieties of the benzylamino and phenylphosphonic acid, and a rigid conformer produced by an internal salt bridge between the phosphonate and the α-amino group. Replacement of the phosphonic acid moiety with a phosphinic or carboxylic acid as well as deletion of the benzyl substitution on the α-amino group led to great reductions in potency.
- Beers, Scott A.,Schwender, Charles F.,Loughney, Deborah A.,Malloy, Elizabeth,Demarest, Keith,Jordan, Jerold
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p. 1693 - 1701
(2007/10/03)
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- Qualitative analysis of the stability of the oxazine ring of various benzoxazine and pyridooxazine derivatives with proton nuclear magnetic resonance spectroscopy
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A series of 3,4-dihydro-1,3-benzoxazine and 3,4-dihydro-1,3-pyridooxazine derivatives was synthesized, and the hydrolysis of the derivatives was studied with proton nuclear magnetic resonance spectroscopy. The oxazine derivatives underwent various degrees of hydrolysis when H2O was added to dimethyl sulfoxide solutions of the compounds. The rates and extents of decomposition of the oxazine ring systems depended on the electronic effects of substituents within the molecules. Examination of the proton nuclear magnetic resonance spectra that were generated during decomposition of the oxazines and trends in stability of the oxazine derivatives suggest the formation of an intermediate in the hydrolysis mechanism.
- Moloney,Craik,Iskander
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p. 692 - 697
(2007/10/02)
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- The Electrochemical Synthesis of Neutral Zinc(II) Complexes of Schiff Base Ligands: The Crystal Structure of Biszinc(II)
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The electrochemical synthesis and physico-chemical properties of neutral zinc(II) complexes of bidentate Schiff bases derived from salicylaldehydes are presented together with the X-ray structure of biszinc(II).The crystal is monoclinic, a = 21.877(3), b = 8.801(2), c = 12.027(5) Angstroem, β = 96.55(3) deg, space group C2/c.The complex is a monomer, and the zinc atom is tetrahedrally coordinated. - Keywords: X-Ray, Zinc, Schiff Bases, Electrochemical Synthesis
- Sogo, T.,Romero, J.,Sousa, A.,Blas, A. de,Duran, M. L.,Castellano, E. E.
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p. 611 - 615
(2007/10/02)
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- SYNTHESIS, ACID-BASIC PROPERTIES AND CHELATING TENDENCY OF AMINOPHOSPHONIC AND AMINOPHOSPHINIC ACIDS WITH CHANGING ANALYTICAL-FUNCTIONAL GROUPS
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The preparation of new N-substituted aminophosphinic and aminophosphonic acids have been described.Dissociation constants and stability constants of complexes towards metal cations have been determined.The obtained colored complexes have been characterized and their analytical application emphasized.
- Siepak, Jerzy
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p. 955 - 970
(2007/10/02)
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- THERMAL DECOMPOSITION OF 2-HYDROXYBENZYLAMINES
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The results are given of the preparation of a number of 2-hydroxybenzylamines and their thermal decomposition.The thermolysis reactions and the formation of the corresponding amines take place smoothly and with good yields.
- Vinogradova, V. I.,Yunusov, M. S.
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p. 308 - 311
(2007/10/02)
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- SOLVENT EFFECT IN THE AMINE EXCHANGE OF SCHIFF BASES, II. RELATIONSHIP BETWEEN THE RATE CONSTANT AND THE ACTIVITY COEFFICIENT OF ETHANOL IN ETHANOL-CYCLOHEXANE MIXTURE
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The rate of amine exchange has been investigated in the reaction of Schiff bases with primary amines in ethanol-cyclohexane mixtures.The rate constant depends, according to the folowing equation, on the rate constants measured in ethanol and cyclohexanol (k1*, k2*), on the composition of solvent mixture (x1, x2) and on the activity coefficient of ethanol (γ1): log k=x1 logk1* + x2 logk2* + (a+bγ1)x1x2.The validity of the equation is interpreted by the hydrogen bond formed between the ethanol and Schiff base molecules.
- Nagy, P.
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p. 461 - 468
(2007/10/02)
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- STRUCTURAL INFORMATION ON SOME BERYLLIUM(II) COMPLEXES OF N-ARALKYLSALICYLALDIMINES
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A series of stable beryllium(II) complexes of newly synthesized N-aralkylsalicylaldimine Schiff bases has been prepared and characterized.Structures have been elucidated on the basis of analytical, conductance and IR and PMR spectral data.A tetrahedral symmetry has been proposed for all these complexes which are non-ionic.
- Nath, Rabinder,Bhatnagar, R. P.
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p. 355 - 364
(2007/10/02)
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- Synthesis and Reactions of Coumarin-3-N-bromoarylcarboxamides
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Various coumarin-3-N-bromoarylcarboxamides (Ia-h) have been prepared and their reactions with aliphatic amines and hydrazines studied.Some acridinyl derivatives (XIa-f) of coumarin-3-carboxamide (Ii) have also been prepared.
- Islam, A. M.,Bedair, A. H.,Aly, F. M.,El-Sharief, A. M. Sh.,El-Masry, F. M.
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p. 224 - 226
(2007/10/02)
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