| 词汇 | elimination-reaction |
| 释义 | elimination reaction noun[ C ] chemistry specializeduk /ɪ.lɪm.ɪˈneɪ.ʃən riˌæk.ʃən/ us /ɪ.lɪm.ɪˈneɪ.ʃən riˌæk.ʃən/ a chemical reaction in which a substance separates from a molecule消除反应（一种物质从分子中分离的化学反应） Physical & chemical processes absorbable absorptive absorptive capacity absorptivity acidification endothermic reaction excitation excite exergonic exothermic exothermic reaction fermentation impregnate reabsorb react reboil recondense redox scald vaporize Examples of elimination reactionelimination reaction It is a thermosetting phenol formaldehyde resin, formed from an eliminationreaction of phenol with formaldehyde. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Ammonia can be split off in an eliminationreaction to form enals and enones. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. An addition reaction is the opposite of an eliminationreaction. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. An eliminationreaction regenerates the carbene and releases the product 4. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In the presence of acid, hemiacetals can undergo an eliminationreaction, losing the oxygen atom that once belonged to the parent aldehydes carbonyl group. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This generates an oxyallyl cation which undergoes an eliminationreaction to lose a -hydrogen. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The presence of an acid facilitates the eliminationreaction in the zwitterion by proton transfer which becomes much faster and no longer rate determining. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The carbanion proceeds in an eliminationreaction to create the carboncarbon double bond. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Addition of alkali to the -substituted compound on the other hand leads to an eliminationreaction with liberation of ethylene. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This intermediate loses water in an eliminationreaction to unsaturated carbonyl compound 4 and then loses water again in imine formation to quinoline 7. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It was reasoned that a contaminant must have been present to cause this unexpected elimination reaction, and the cause was eventually determined to be traces of nickel salts. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Selenium in these reactions is almost always stereogenic, and the effect of epimerization at selenium (which is acid-catalyzed and occurs readily) on the eliminationreaction is nearly unknown. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Methanesulfonates are used as intermediates in substitution reactions, elimination reactions, reductions, and rearrangement reactions. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The reaction, formally a rearrangement, ranks under the elimination reactions as already observed by the original authors. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In general, with the exception of fluorinated compounds, haloalkanes readily undergo nucleophilic substitution reactions or elimination reactions. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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