19 research outputs found
Effects of cervical muscle fatigue on the perception of the subjective vertical and horizontal
Get PDFFree radical substitution. Part 38. The effect of solvent on the atomic chlorination and bromination of 2-substituted butanes and the importance of steric effects
No full textThe relative selectivity of atomic halogenation of 2-substituted butanes is influenced by the phase and by solvents. There are solvents which increase the selectivity compared with the gas phase and solvents which decrease the relative selectivity. However the most striking feature of the halogenation (especially the bromination) of 2-substituted butanes is the high reactivity of the 2-position notwithstanding very unfavourable polar effects. This reactivity is attributed to the release of steric compression associated with the abstraction of the tertiary hydrogen atom. The halogenation of butan-2-ol esters is associated with some decomposition of 2-butyl radical [CH3CH 2C(OCOR)CH3] and the chlorination of 2-phenylbutane with the formation of olefins 2-phenylbut-1-ene and 2-phenylbut-2-ene.</p
Free radical substitution. Part 38. The effect of solvent on the atomic chlorination and bromination of 2-substituted butanes and the importance of steric effects
No full textThe relative selectivity of atomic halogenation of 2-substituted butanes is influenced by the phase and by solvents. There are solvents which increase the selectivity compared with the gas phase and solvents which decrease the relative selectivity. However the most striking feature of the halogenation (especially the bromination) of 2-substituted butanes is the high reactivity of the 2-position notwithstanding very unfavourable polar effects. This reactivity is attributed to the release of steric compression associated with the abstraction of the tertiary hydrogen atom. The halogenation of butan-2-ol esters is associated with some decomposition of 2-butyl radical [CH3CH 2C(OCOR)CH3] and the chlorination of 2-phenylbutane with the formation of olefins 2-phenylbut-1-ene and 2-phenylbut-2-ene.</p
Comparison on the detection of common pathogenic microorganisms found in public transportation vehicles in selected cities of Cavite
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Extraction of adaptive wavelet packet filter‐bank‐based acoustic feature for speech emotion recognition
No full textA Modified Artificial Bee Colony Algorithm for Image Denoising Using Parametric Wavelet Thresholding Method
No full textReal-time Dash Streaming Architecture for Internet of Things Using FBMRWP Model for Medical Videos
No full textConditions of formation, purification, and characterization of an alpha-galactosidase of Trichoderma reesei RUT C-30
No full textSynthesis of cellulose derivatives containing the dihydroxyboryl group and a study of their capacity to form specific complexes with sugars and nucleic acid components
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