“…The photodimerization affords a novel head-to-head cyclo­butane product. The cyclo­butane possesses tetrahedrally disposed cis-hydrogen-bond donor (phenolic) and cis-hydrogen-bond acceptor (pyridyl) groups. …”
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“…Both mol­ecules have similar conformations of nine-membered rings, which are trans-fused with cyclo­butane fragments. The puckering amplitudes (q2) of the cyclo­butane rings are 0.2451 (2) and 0.2526 (2) Å.…”
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“…Finally, trap catches of four compounds (p-anisaldehyde, eugenol, farnesene, and 3-methyl butanal, respectively) significantly increase in tea plantations. …”
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“…Particularly propane, butane, or propane-butane mixture has highest mortality rates. …”
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“…When ethane returns go down, there is excess comovement in the returns of butane. Moreover, the tail dependence is strongest between crude oil and natural gas.…”
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“…The inter­nal C—Ge—C bond angle in the germacyclo­butane ring of the title compound, C(17)H(14)F(6)Ge or [Ge(C(3)H(6))(C(7)H(4)F(3))(2)], is 77.8 (3)°. …”
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“…Special emphasis was on 3-methyl butanal and its presence in various food products. …”
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“…The asymmetric unit of the title compound, C(30)H(22)N(2)O(6), comprises a half-mol­ecule of the cyclo­butane derivative. The least-squares planes defined by the respective C atoms of the aromatic substituents inter­sect at angles of 76.81 (7) and 89.22 (8)° with the least-squares plane defined by the C atoms of the cyclo­butane ring. …”
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“…We present the case of a 66-year-old woman who developed hypersensitivity pneumonitis after dabbing butane hash oil for the first time and was successfully treated with corticosteroids with complete resolution of her symptoms. …”
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“…The reaction selectivity over the single atom alloy catalysts was found to be primarily controlled by the Cu host surface, mainly leading to the formation of butanal but at a significantly higher rate than the monometallic Cu catalyst. …”
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“…Finally, the combined analysis of headspace solid-phase microextraction–gas chromatography–mass spectrometry, statistical MetaboAnalyst, and odor activity value showed that the microwaved, roasted, steamed, and boiled tilapia muscles had, respectively, three (hexanal, nonanal, and decanal), four (2-methyl-butanal, 3-methyl-butanal, decanal, and trimethylamine), one (2-methyl-butanal), and one (decanal) relatively important volatile compounds.…”
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“…The apparatus has been performance tested by measuring the vapor pressures of propane, butane, and a standard mixture of propane + butane.…”
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“…Because long-range pheromones are frequently conserved among closely related species of cerambycids, we evaluated two components of the volatile pheromone produced by males of the congener A. glabripennis (Motschulsky), 4-(n-heptyloxy)butan-1-ol and 4-(n-heptyloxy)butanal, as potential pheromones of A. chinensis. …”
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“…Roasted sunflower seeds showed seven main volatile compounds characteristic of the roasting process by HS-SPME-GC-MS: 2-pentylfuran, 2,3-dimethyl-pyrazine, methyl-pyrazine, 2-octanone, 2-ethyl-6-methylpyrazine, trimethyl-pyrazine, and trans,cis-2,4-decadienal, whereas fried samples showed six volatile characteristic compounds of the frying process: butanal, 2-methyl-butanal, 3-methyl-butanal, heptanal, 1-hexanol, and trans,trans-2,4-decadienal. …”
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“…The genomes encode methyl-CoM reductase-like enzymes that are similar to those found in butane-oxidizing archaea, as well as several enzymes potentially involved in alkyl-CoA oxidation and the Wood-Ljungdahl pathway. …”
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“…The short chain, gaseous alkanes ethane, propane, n- and iso-butane are released in significant amounts into the atmosphere, where they contribute to tropospheric chemistry and ozone formation. …”
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“…In the absence of CO(2), addition of three concentrations of butan-1-amine caused inhibition when added to the basic blend. …”
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“…The cyclo­hexane and cyclo­butane rings adopt sofa and butterfly conformations, respectively. …”
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“…[Image: see text] In situ (1)H pulsed field gradient (PFG) NMR was used to investigate the molecular diffusion of n-butane in the pores of the flexible metal–organic framework DUT-49(Cu) at 298 K at different pore loadings, including pressure ranges below and above the negative gas adsorption (NGA) transition caused by structural contraction of the material. …”
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“…The reaction of substituted and unsubstituted propargylic bromides with butanal in presence of zinc power in THF/saturated aqueous NH(4)Cl solution gave corresponding allenic and propargylic alcohols with high selectivity.…”
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