| 词汇 | methyl-group |
| 释义 | BETA methyl groupcollocation in Englishmeanings of methyland groupThese words are often used together. Click on the links below to explore the meanings. methyl noun[ C or U ] uk /ˈmeθ.ɪl/ us /ˈmeθ.əl/ the alkyl that comes from methane; often used before another noun in the name of ... See more at methyl group noun uk /ɡruːp/ us /ɡruːp/ a number of people or things that are put together or considered as ... See more at group Examples of methyl groupmethyl group The clinching evidence can with studies of the hydrogen-deuterium isotope effect on substrates fluorinated on the methylgroup and deuterated on the aldehyde. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Its structure consists of a benzene ring "para" -substituted with a methylgroup and an isopropyl group. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In-methylcyclophanes in particular have a methylgroup in proximity to a benzene ring. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This is believed to be due to steric strain resulting from the methylgroup and the carboxylic group in the "cis" -dienoid structure. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It features a tricyclic skeleton, a geminal dimethyl group, a tertiary methylgroup, and an exocyclic methylene group. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. When a hydrogen atom is abstracted from the methylgroup, the cyclopropane ring of the radical produced opens up in a fast and irreversible step. The radical clocks have cyclopropane rings with a methylgroup. This discrimination is remarkable given that the two ligands differ only by the presence of one extra methylgroup on caffeine. First of all, the methylgroup is found to be inverted at carbon. Its instability is caused by the oxidizing power of the hypochlorite group, which can easily undergo a redox reaction with the methylgroup. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Lower binding in the other substituted amides was explained by steric hindrance or lack of a methylgroup resulting in loss of hydrophobic interaction. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Only when the cyclohexane ring is properly substituted will the proton add in a trans position with respect to the adjacent methylgroup. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. However, the addition of the alpha methylgroup allows the compound to avoid metabolism and confer an effect. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The methylgroup on the alpha carbon (the first carbon before the nitrogen group) also makes this compound a member of the amphetamine family. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. For a non-isotopic labeling method the smallest perturbation to the system will be by addition of a methylgroup at an unreactive position. 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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