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8.1化学动力学的任务和目的 一、化学热力学的研究对象和局限性 二、化学动力学的研究对象
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Esters, like aldehydes and ketones, are weakly acidic. When an ester with an alpha hydrogen is treated with one equivalent of a base such as sodium ethoxide, a reversible condensation reaction occurs to yield a β−keto ester product. This reaction between two ester components is known as the Claisen condensation reaction
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Carbonyl compounds are a broad group of compounds that includes aldehydes, ketones,carboxylic acids, and esters
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10.3 The Reactions of Alkanes with Halogens 10.3 A Multiple Substitution Reactions Versus Selectivity 10.4 Chlorination of Methane:Mechanism of Reaction
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Aldehydes are named by replacing the terminal –e of the corresponding alkane name with –al. The longest chain selected as the base name must contain the –CHO group, and the –CHO carbon is always numbered as carbon 1
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In the addition of HX to an unsymmetrically substituted alkene, the hydrogen atom adds to the carbon atom of the double bond that already has the greater number of hydrogen atoms and that the X group adds to the carbon having more alkyl substituents. Markovnikov’s rule can be restated by saying that, in the addition of HX to an alkene, the more stable carbocation intermediate is formed
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More reactive than benzene toward electrophilic substitution NO2 An deactivating group Less reactive than benzene toward electrophilic substitution Ortho-para director Meta director
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