Complexes of tris(hydroxymethyl)phosphine oxide (thpo) with various metal perchlorates were prepared by interaction of ligand and salt in triethyl orthoformate. Characterization of the new complexes by means of spectral, magnetic and conductance studies led to their formulation as [M(thpo)6](ClO...
Crystals of tris(hydroxymethyl)nitromethane (1) and tris(hydroxymethyl)aminomethane (2) were prepared and grown at room temperature. X-ray analysis was used to study the structure of crystals 1 and 2 at room temperature; the X-ray diffraction method was applied to investigate polycrystalline sam...
The synthetic modification of enantiopure hydroxymethyl-substituted pyridine derivatives leading to novel chiral ligands is described. A set of these pyridine derivatives was examined as ligands in asymmetric transformations such as enantioselective alkylations or alkynylations of aldehydes, the...
A palladium-catalyzed direct CX bond formation of azobenzenes with 1,3-dibromo-5,5-dimethylhydantoin or trichloro isocyanuric acid via CH activation has been developed. The reaction could proceed smoothly under an air atmosphere at 110 °C in the presence of Pd(Ph3P)4 in DCE and 13 examples of p...
Objective1-Bromo-3-chloro-5,5-dimethylhydantoin (BCDMH) is a solid oxidizing biocide for water disinfection. The objective of this study was to investigate the toxic effect of BCDMH on zebrafish.
A new molecular adduct namely, 4-(dimethylamino)benzaldehyde 4-nitrophenol (4DMAB4NP), has been synthesized through crystal engineering route by reacting 4-(dimethylamino)benzaldehyde and 4-nitrophenol in equimolar ratio. This hydrogen bonded material is found to have crystallized with centrosym...
Chiral β-amino alcohols are very important chiral building block for preparing bioactive compounds for use in pharmaceutical and fine chemical industries. Synthesis of chiral β-amino alcohols by transaminase is big challenging due to the strict substrate specificities and very low activity of ...
The tris(2-(dimethylamino)phenyl)methanol, a tertiary alcohol, can form stable salts with acids in water. X-ray crystallographic analysis reveals that the organic cation of the tetrachlorocobaltate salt, [(2-(Me)2N+H–C6H4)3C–O−]2+, was constructed by three zwitterionic hydrogen bonds which sha...
Tris(2-(dimethylamino)phenyl)methanol, (2-(Me)2N-C6H4)3COH, was synthesized and characterized by using NMR, EA and ESI-MS. Single crystal of the 2-syn/1-anti conformer of the tertiary alcohol was obtained and analyzed by X-ray diffraction. The variable-temperature 1H NMR experiments reveal that,...
Prenatal alcohol exposure (PAE) is often associated with congenital heart defects, most commonly septal, valvular, and great vessel defects. However, there have been no known studies on whether PAE affects the resulting fibroblast population after development, and whether this has any consequenc...
2-Isoxazolines were synthesized efficiently from a formal [4+1] cycloaddition of nitrosoalkenes and sulfur ylides, which were generated in situ from α-haloketone oximes and dimethyl sulfonium salts. This approach provides a new method to synthesize a range of 2-isoxazolines in high yields and h...
In this communication, a palladium-catalyzed carbonylative/decarboxylative cross-coupling of α-bromo-ketones with allylic alcohols has been developed. With Mo(CO)6 as the CO source, γ,δ-unsaturated ketones were isolated in good yields. The release of CO2 was confirmed as well.
Mesoporous H3PW12O40-silica composite catalysts with controllable H3PW12O40 loadings (4.0–65.1%) were prepared by a direct sol–gel–hydrothermal technique in the presence of triblock poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) copolymer. Powder X-ray diffraction (XRD) patte...
Highly porous polybenzoxazine-based vitreous carbon foams prepared by a self-blowing process followed by pyrolysis at 900 °C are presented. Both organic and carbon foams were described in terms of porosity and thermal and mechanical properties, but the investigations mainly focused on carbon fo...
Flame retardant polybenzoxazine foams were prepared in a two step process, by heating mixtures of the benzoxazine derived from renewable diphenolic acid (DPA-Bz) with 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) or 9,10-dihydro-9-oxa-10-(1-hydroxy-1-methylethyl) phosphaphenanthrene-...
The thermal performance of aromatic polyesters (poly(DPA–IPC), poly(MDP–IPC) and poly(EDP–IPC)) prepared from isophthaloyl chloride (IPC) with diphenolic acid (DPA) and its esters were studied with DSC and TG, and the decomposition mechanism of poly(DPA–IPC) were investigated using FTIR and ...
The elimination of diphenolic acid (DPA) from contaminated water is an urgent challenge. The aim of this study was to investigate DPA degradation by gamma radiation, studying the influence of the dose rate, initial DPA concentration, solution pH, the presence of O2, and the presence of different...
In an effort to impart fire protection properties to polylactic acid (PLA) utilizing renewable resources, diphenolic acid, a plant derived compound, was used to synthesize a biphosphate (hereinafter shortened as FR) that contains two types of phosphorus. The chemical structure of FR was confirme...
The reaction of mixtures of renewable diphenolic acid (DPA) and its methylesterbenzoxazine derivative (MDP-Bz) has been studied. The DPA was introduced to lower the high temperature needed to complete the curing of the pure benzoxazine. In this way, samples with different DPA/MDP-Bz ratio (0, 2,...
This chapter introduces renewable diphenolic acid (DPA) as a potential “green” candidate to displace bisphenol A (BA) (which has recently shown links to serious human health concerns) as a starting material for the synthesis of new high performance polybenzoxazine materials. Several approaches...
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