THF, tetrahydrofuran
Ceramic aerogels of the Si-C-N-O system from pre-ceramic polymer
... SiOC: Silicon Oxycarbide SiCN: Silicon Carbonitride DVB: Divinylbenzene TVS: Tetravinylsilane THF: Tetrahydrofuran RT: Room Temperature SSA: Specific Surface Area SCD: Supercritic[r] ...
128
Thermophysical properties of binary liquid mixtures of tetrahydrofuran with benzene and substituted benzenes at 308 15 K
... THF, benzene (B), methyl benzene (MB), ethyl benzene (EB), chloro benzene (CB), bromo benzene (BB) and nitro benzene (NB) were purchased from Merck ( > 98% of purity) and used as purchased. Clear binary ...
7
Studies on synthesis of some new amino acid derivatives of Cefadroxil and their antimicrobial evaluation
... Synthesis of N-Tos-cefadroxil amino acid methyl ester derivatives (XXI-XXV). A mixture of N-Tos-cefadroxil (IV; 0.002 mol), an amino acid methyl ester hydrochloride (0.0022 mol) and TEA (0.0022 mol) suspended in 20 ml ...
10
Spectroscopic Study of Molecular Interactions in the Binary Mixture ofEthylacetoacetate and Tetrahydrofuran
... with methanol and o-cresol. They have observed that specific strong interactions are taking place in THF-o-cresol mixture while dispersive forces are responsible for behaviour of THF-methanol mixture 18 . ...
8
Copolymers of tetrahydrofuran and epoxidized vegetable oils : application to elastomeric polyurethanes
... value and thermal properties of the p(THF-stat-EVO) macromonomers was determined. Elastomeric polyurethanes were prepared from p(THF-stat-EVO) macromonomers and MDI and their mechanical and thermal ...
8
Solvated CrBr2(thf)2, a linear chain in the solid state
... tetrahydrofuran (thf) molecules, with a CrÐO distance of 2.072 (3) AÊ and a CrÐBr distance of 2.5825 (5) AÊ. The Cr atom lies on the center of inversion. The Cr atom is octahedrally coordinated, with the ...
6
Cobalt Mediated Oxidative Cyclizations: The Diastereoselective Synthesis of trans-Tetrahydrofuran Rings
... Despite the high dr, simplicity of starting materials, and good yields of the Mukaiyama oxidative cyclization, there is great difficulty when attempting to remove the decomposed cobalt by-products while isolating the ...
173
The Topological Structures of the Debundled Single Walled Carbon Nanotubes on a Grid
... The scanning electron microscope (SEM) and transmission electron microscope (TEM) measurements of individual single-walled single carbon nanotube (SWNT) have revealed the nature of trigonal warping of SWNTs in the ...
7
Electrospinning of Grooved Polystyrene Fibers: Effect of Solvent Systems
... and tetrahydrofuran (THF); high boiling point solvent (HBPS): N , N -dimethylformamide (DMF) and cyclohexanone (CYCo); and non-solvent (NS): 1-butanol ...
10
Sodium-mediated magnesiation of thiophene and tetrahydrothiophene: structural contrasts with furan and tetrahydrofuran
... in chemical transformations, such as catalytic asymmetric epoxidation, catalytic intramolecular cyclopropanation, and asymmetric metal catalysis hydrogenation. [6] From a nanochemical perspective, the adsorption ...
9
Sulfonylative and azidosulfonylative cyclizations by visible light photosensitization of sulfonyl azides in THF
... from THF to the nitrene to give a tet- rahydrofuran-2-yl radical, which then reacts with the sulfonyl azide to produce the sulfonyl ...the tetrahydrofuran-2-yl radical can be intercepted by ...
7
Crystal structure of an unknown tetrahydrofuran solvate of tetrakis(μ3 cyanato κ3N:N:N)tetrakis[(triphenylphosphane κP)silver(I)]
... To get access to a large range of metal allophanates (e.g. Cu, Ni or Zn), a modified synthetic procedure with respect to the method reported by Dains et al. (1919) was applied for the synthesis of silver allophanates ...
23
The helix surface of sugar ring for tetrahydrofuran
... carbon atoms C and oxygen atom O constitute a curved surface or the helix surface. The tetra- hydrofuran molecule can be as a simple proto- type of deoxyribose and has been reviving a quite deal of interest in radiation ...
7
Study of the intermolecular interactions of mixed solvents of tetrahydofuran and propylene carbonate for magnesium ion battery
... Intermolecular interactions of Mixed organic electrolytes formed by the combination of Tetrahydrofuran (THF) and Propylene carbonate (PC) solvents with Magnesium Perchlorate salt were studied. The mixtures ...
5
Detailing the Structure of Liquid THF Based on an EPSR Study
... the THF structure in their molecules as, for example, marine macrolides and tetrahydrofuran lignans, just to name two that are subject of study in our ...some tetrahydrofuran lignans have showed a ...
8
Use of bacteria for improving the lignocellulose biorefinery process: importance of pre-erosion
... B-6; THF–H 2 O: tetrahydrofuran–water; MnP: manganese peroxidase; Lac: laccase; LiP: lignin peroxidase; VP: versatile peroxidase; MSM: mineral salt medium; CrI: crystallinity index; SL[r] ...
13
Tetra μ chloro chloro(N,N,N′,N′ tetramethylethane 1,2 diamine)(1,1,3 trimethyl 2 imidazolium)dicopper(I)copper(II)
... THF was carried out as previously described (George & Purdy, 1992). The mother liquor of the crystallization was evaporated under vacuum to remove solvent, and the residue was sublimed under vacuum, affording ...
11
Conductance And Ion-Association Studies Of Lipic In (PC+THF) At Different Mixtures
... in (PC+THF) non-aqueous mixture. G 0 values are negative from 25 0 C to 45 0 C which indicates that the reactions are spontaneous. S 0 values are also positive from 25 0 C to 45 0 C which indicates or supports ...
7
Synthesis, characterization and antimicrobial activity of substituted N benzhydrylpiperidin 4 amine derivatives
... 1-(phenylsulfonyl)piperidin-4-one (3a): Piperidin-4-one hydrochloride (5.0g, 0.0332 mol) and Triethylamine (0.098 mol) were dissolved in Tetrahydrofuran (150 ml), under stirring Benzenesulfonyl chloride (0.359 ...
9
Precursors for Enantiopure Clenbuterol and other 2
... racemic clenbuterol with CALA and CALB from Sigma-Aldrich and vinyl butanoate as the acyl donor 97.. in tetrahydrofuran, Scheme 2.[r] ...
13