| 词汇 | addition-reaction |
| 释义 | addition reaction noun[ C ] chemistry specializeduk /əˌdɪʃ.ən riˈæk.ʃən/ us /əˌdɪʃ.ən riˈæk.ʃən/ a chemical reaction in which two or more substances combine to form a new substance加成反应（两种或多种物质组合生成一种新物质的化学反应） 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 addition reaction | American Dictionaryaddition reaction noun[ C ] us/əˈdɪʃ·ən riˌæk·ʃən/ chemistry a chemical reaction in which two or more substances combine to form a new substance Examples of addition reactionaddition reaction The first step in this reaction is an additionreaction of sodium bisulfite to an aromatic double bond. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The first reaction shown below, from the synthesis of taxane skeleton, uses a copper-based catalyst supported by a chiral phosphoramidite ligand for a conjugate carbonyl additionreaction. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Conjugate addition reactions of allylsilanes are possible, although unsaturated aldehydes undergo only 1,2 addition. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Their work, first published in 1937, was intended as a preliminary progress report of thermochemical studies of energy changes during addition reactions of various unsaturated and cyclic compounds. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The reaction is a form of electrophilic addition; it is similar to the halogen additionreaction. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Two non-polar additionreaction exists as well called free radical addition and cycloadditions. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Kinetic control means that the forward aldol additionreaction must be significantly faster than the reverse retro-aldol reaction. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. An additionreaction is the opposite of an elimination reaction. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This nucleophile reacts with the electrophilic alkene 3 to form 4 in a conjugate additionreaction. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The substrate of an electrophilic additionreaction must have a double bond or triple bond. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. As a class of additionreaction, cycloadditions permit carboncarbon bond formation without the use a nucleophile or electrophile. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The same is true when an alkene reacts with water in an additionreaction to form an alcohol which involve formation of carbocations. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This is an electrophilic additionreaction. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Light converts elemental bromine into a bromine radical, which attacks the alkene in a radical additionreaction to a bromo-alkane radical; and now single bond rotation is possible. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Once benzene is produced, the synthesis of more complex compounds occurs via simple substitution or addition reactions. See all examples of addition reaction 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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