“…An inexpensive sonar instrument was prepared for measurements of sound velocity in two fluorocarbon vapors; per-fluoro-n-propane (C3F8), per-fluoro-n-butane (C4F10), and their custom mixtures. The apparatus, measurement principle and instrument software are described. …”
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“…The title compound, C(16)H(12)F(3)N(3)O(5)S·H(2)O, was prepared by reaction of 4-nitro­benzaldehyde, 4,4,4-trifluoro-1-(thio­phen-2-yl)butane-1,3-dione and urea. The asymmetric unit contains two independent mol­ecules, with essentially identical geom­etries and conformations. …”
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“…Also, gas sensitivity properties of the printed films were evaluated in the presence of methane (CH(4)) and butane (C(4)H(10)) at up to 500 °C operating temperature of the sensor. …”
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“…In experiments, a mixture of methane, butane and ethane was analyzed by this new method, and the results showed that the concentration of each gas in the mixture could be detected with a single catalytic sensor, and the maximum relative error was less than 5%.…”
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“…In the crystal structure of a semi-synthetic opioid drug buprenorphine, C(29)H(41)NO(4) {systematic name: (2S)-2-[(5R,6R,7R,14S)-9α-cyclo­propyl­methyl-3-hy­droxy-6-meth­oxy-4,5-ep­oxy-6,14-ethano­morphinan-7-yl]-3,3-di­methyl­butan-2-ol}, the cyclo­propyl­methyl group is disordered over two sites with an occupancy factor of 0.611 (3) for the major component. …”
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“…Numerous cases of sudden deaths caused by intentional propane and/or butane inhalation have been described, but these cases survived and a description of the consequences is very rare. …”
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“…The title compound [systematic name: 2-(4-chloro­phen­yl)-3-cyclo­propyl-1-(1H-1,2,4-triazol-1-yl)butan-2-ol], C(15)H(18)ClN(3)O, is a conazole fungicide. …”
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“…Applications are shown for various hydrocarbon molecules of increasing complexity and flexibility, and demonstrate the accuracy of the model when predicting the density on octane and octatetraene after training exclusively on butane and butadiene. This transferable, data-driven model can be used to interpret experiments, accelerate electronic structure calculations, and compute electrostatic interactions in molecules and condensed-phase systems.…”
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“…[Image: see text] A new melatonin sulfonate derivative sodium 4-(3-(2-acetamidoethyl)-5-methoxy-1H-indol-1-yl) butane-1-sulfonate (MLTBS) with higher water solubility (695 times) and lower cytotoxicity than natural melatonin (MLT) was synthesized, yet with the same sleep aid function. …”
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“…Towards this goal, we have found that azabicyclo[1.1.0]butyl carbinols, readily obtained from the highly strained azabicyclo[1.1.0]butane (ABB), can undergo divergent strain‐release reactions upon N‐activation. …”
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“…Herein, we report a strain‐release driven synthesis of azetidine‐containing spirocycles by harnessing the inherent ring strain of the azabicyclo[1.1.0]butane (ABB) fragment. Novel ABB‐ketone precursors bearing silyl‐protected alcohols were synthesized in a single step and shown to engage in electrophile‐induced spirocyclization‐desilylation reactions. …”
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“…Therefore, the highest ethene uptake was obtained for the material with an intermediate activation time, while the highest butane uptake was obtained for the material with the highest activation time.…”
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“…Herein we report that biogenic amines derived from L‐tyrosine catalyze the self‐aldol condensation of butanal to 2‐ethylhexenal – a key intermediate in the production of the bulk chemical 2‐ethylhexanol – in the presence of living Escherichia coli and outperform many amine organocatalysts currently used in synthetic organic chemistry. …”
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“…The sensing device is tested using methane and hydrocarbon mixtures (propane, butane). The obtained limit of detection for methane is 25 ppm m(−1). …”
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“…We have studied the fragmentation of the brominated cyclic hydrocarbons bromocyclo-propane, bromocyclo-butane, and bromocyclo-pentane upon Br(3d) and C(1s) inner-shell ionization using coincidence ion momentum imaging. …”
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“…Essentially, quantitative yields were obtained under mild reaction conditions (1 bar CO(2), 60 °C), without the need of any base or additives, in the presence of the alkylcarbonyl Mn(I) bis(phosphine) complexes fac-[Mn(CH(2)CH(2)CH(3))(dippe)(CO)(3)] [Mn1, dippe = 1,2-bis(diisopropylphosphino)ethane] and [Mn(dippe)(CO)(2){(μ-H)(2)(Bpin)}] (Mn4), that is obtained by reaction of the bench-stable precatalyst Mn1 with HBpin via elimination of butanal. Preliminary mechanistic details were obtained by a combination of NMR experiments and monitoring of the catalytic reactions.…”
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“…The shift from homolactic to mixed acid fermentation, the biphasic kinetics observed for cell growth and nitrogen consumption and the increase in the concentrations of biomass and products (lactic acid, acetic acid, ethanol, and butane-2,3-diol) were the most noteworthy observations of these cultures. …”
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“…Luminescent properties of two heteroleptic dibenzoylmethanate europium(III) complexes with 1,3-bis(5-pyridin-2-yl-1,2,4-triazol-3-yl)propane (H(2)L(1)) and 1,4-bis(5-pyridin-2-yl-1,2,4-triazol-3-yl)butane (H(2)L(2)) as ancillary ligands are described. …”
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“…This difference was mainly due to varying contents of some higher alcohols (2-methylpropanol, isoamyl alcohols, hexanol, and butane-2,3-diol) and esters (ethyl 2-methylbutanoate, butylacetate, and hexyl acetate).…”
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“…Thermal heating by a butane flame prior to insertion and in situ resistive heating using a power supply yield identical results. …”
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