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Dual mode single agent thermochemical ablation by simultaneous release of heat energy and acid: hydrolysis of electrophiles.
This study aimed to investigate two readily available electrophilic reagents, acetyl chloride (AcCl), and acetic anhydride (Ac(2)O), for their potential in tissue ablation.Reagents were diluted in dig...Read More
Dynamic nuclear polarization (DNP) has become an attractive technique to boost the sensitivity of NMR experiments. In the case of ex situ polarizations two-dimensional (2D) spectra are limited by the ...Read More
Regio- and stereoselective anomeric esterification of glucopyranose 1,2-diols and a facile preparation of 2-O-acetylated glucopyranosyl trichloroacetimidates from the corresponding 1,2-diols
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Synthesis of carbazoles via an intramolecular cyclization of 2-(6-substituted 3(Z)-hexen-1,5-diynyl)anilines and their related molecules.
Various 2-(6-substituted 3(Z)-hexen-1,5-diynyl)anilines 1a-g were treated with potassium tert-butoxide or potassium 3-ethylpentanoxide in NMP at 60 degrees C for 2 h to give the corresponding 5-substi...Read More
Kinetic resolution of secondary alcohols by the combination of a chiral Br?nsted acid, DABCO, and acetyl chloride.
An efficient and simple protocol for the kinetic resolution of secondary alcohols is presented. The new system is based on a combination of chiral Br?nsted acid, DABCO, and acetyl chloride and gives v...Read More
A wide range of ab initio and hybrid density functional methods and basis sets have been employed to calculate the barriers to methyl internal rotation in a range of molecules with the acetyl moiety. ...Read More
Practical considerations in the determination of compound-specific amino acid δ15N values in animal and plant tissues by gas chromatography-combustion-isotope ratio mass spectrometry, following derivatisation to their N-acetylisopropyl esters.
Stable nitrogen isotope (δ(15)N) values of bone collagen are routinely used to inform interpretations of diet and trophic positions within contemporary and ancient ecosystems, yet the underlying phys...Read More
Stereochemistry of substitution of the α-dimethylamino group by dialkylzinc in chiral benzylferrocene.
The stereochemistry of the substitution of the α-dimethylamino group by dimethylzinc in the presence of acetyl chloride in the chiral benzylferrocene backbone was examined. The reaction with the benz...Read More
Beef, chicken and lamb fatty acid analysis--a simplified direct bimethylation procedure using freeze-dried material.
When fractionation of meat lipids is not required, procedures such as saponification can be used to extract total fatty acids, reducing reliance on toxic organic compounds. However, saponification of ...Read More
Pd2(dba)3/P(MeNCH2CH2)3N·HCl-mediated Stille cross-coupling of [1-11C]acetyl chloride with aryl and heteroaryl stannanes.
Developments in the Stille cross-coupling of [1-11C]acetyl chloride with tributylphenylstannane mediated by the Pd2(dba)3/P(MeNCH2CH2)3N·HClsystem are reported....Read More
Acetyl chloride-silver nitrate-acetonitrile: a reagent system for the synthesis of 2-nitroglycals and 2-nitro-1-acetamido sugars from glycals.
A new reagent system comprising acetyl chloride, silver nitrate, and acetonitrile has been developed for the synthesis of 2-nitroglycals from the corresponding glycals. Under certain conditions, the f...Read More
Photodissociation of gaseous acetyl chloride at 248 nm by time-resolved Fourier-transform infrared spectroscopy: the HCl, CO, and CH2 product channels.
In one-photon dissociation of gaseous acetyl chloride at 248 nm, time-resolved Fourier-transform infrared emission spectroscopy is used to detect the fragments of HCl, CO, and CH(2) in the presence of...Read More
A microfluidic high-resolution NMR flow probe based on a novel stripline detector chip is demonstrated. This tool is invaluable for the in situ monitoring of reactions performed in microreactors. As a...Read More
[1-^1^1C]Acetyl chloride ([^1^1C]AcCl), an important [^1^1C]acylating agent, was synthesized by reacting [^1^1C]CO"2 with methylmagnesium bromide coated on the inner surface of a polyethylene loo...Read More
Gas chromatographic determination of high molecular weight alcohols from policosanol in omega-3 fish oil by acylation with acetyl chloride.
A new validated gas chromatographic (GC) method using acetyl chloride as a derivatizing agent for determining policosanol's high molecular weight alcohols (policosanol's fatty alcohols; PFAs...Read More
Aluminium-induced electrophysiological, biochemical and cognitive modifications in the hippocampus of aging rats.
Aluminium (Al) is the most abundant metal known for its neurotoxicity in humans. It gains easy access to the central nervous system under normal physiological conditions and accumulates in different b...Read More
Cortical acetylcholine release is lateralized during asymmetrical slow-wave sleep in northern fur seals.
Fur seals are unique in that they display both bilateral slow-wave sleep (BSWS), as seen in all terrestrial mammals, and slow-wave sleep with interhemispheric electroencephalogram (EEG) asymmetry, res...Read More
The biosynthesis of knipholone, as an axially chiral phenylanthraquinone, in higher plants was examined by feeding experiments with [13C2]-labeled precursors. [13C2]-Acetate and advanced synthetic int...Read More
Trachea relaxing effects and beta2-selectivity of SPFF, a newly developed bronchodilating agent, in guinea pigs and rabbits.
In this paper we evaluated the bronchodilator effects of SPFF [2-(4-amino-3-chloro-5-trifluomethyl-phenyl)-2-tert-butylamino-ethanol chloride], a newly synthesized beta(2) adrenergic agonist in guinea...Read More
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Comparative evaluation and selection of a method for lipid and fatty acid extraction from macroalgae.
A comparative evaluation of Bligh and Dyer, Folch, and Cequier-Sánchez methods for quantitative determination of total lipids (TLs) and fatty acids (FAs) was accomplished in selective green (Ulva fas...Read More
The wide range of protein concentrations found in biological matrixes presents a formidable analytical challenge in proteomics experiments. It is predicted that low-abundance proteins are the likely c...Read More
Fulfenamic acid sensitive, Ca(2+)-dependent inward current induced by nicotinic acetylcholine receptors in dopamine neurons.
Nicotinic acetylcholine receptors (nAChRs) exhibit high Ca(2+) permeabilities and the Ca(2+)-influx through the nAChRs may be involved in regulation of a variety of signal processing in the postsynapt...Read More
17Alpha-estradiol (1,3,5(10)-estratriene-3,17alpha-diol) together with a tracer dose of the tritium-labeled compound was administered orally and sublingually to male volunteers. The serum concentratio...Read More