指出,共振核—CF 2—的化学位移不仅受第一、二邻位基团的影响,也受第三邻位的影响。
These results indicated that the chemical shifts of central -cf2 - group are not only affected by the first and the second neighboring groups, but also by the third neighboring group.
由于此物质中CF 3具有强吸电子能力,所以其邻位的氯更易被取代,这就说明此反应理论上是能够发生的。
Due to the strong electron-withdrawing property of CF3 - group the substitution of ortho-chloro shows a higher probability, implying the in-principle feasibility of the reaction.
氯被引入苯胺的邻位。
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