Lucas Automotive Austin Tx
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Lucas Automotive Austin Tx
Lucas OH OH H2O Lucas 浓盐酸和无水氯化锌的混合物称为Lucas 试剂。醇与氢卤酸(或干燥的卤化氢)可发生亲核取代反应,生成卤代烃和水,其中卤素负离子是亲核试剂,OH-为离去基团。由于OH-的离去能力很弱,因此反应要在强酸性溶液中进行,先生成盐,使羟基质子化后以H2O的形式易于离去。 实验室常用Lucas试剂与伯 ...
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Lucas Automotive Austin TxDec 23, 2021 · 分析如下: 1. 卢卡斯试剂 (Lucas' reagent)是由无水氯化锌溶于浓盐酸所配制成的一种水溶液。脂肪醇类可与卢卡斯试剂发生SN1亲核取代反应,生成相应的卤代烃。实验室常用卢卡斯试剂来鉴别简单的一级醇,二级醇以及三级醇,这个测试方法已经成为实验室鉴别各类简单脂肪醇的标准方法。 2 ... Sobremesa
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