DrBob

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How would i explain the readiness of allyl alcohol to react with the Lucas test????

Thanks!!
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I still don't understand-- I know Lucas Test is best for tert carbocations but 2-propen-1-ol gives secondary carbocation at best even with rearrangement? Is that the only answer?

  • DrBob -

    I think the answer is in this part of what I gave you earlier. I have bolded the term allylic.

    The reagent dissolves the alcohol, removing the OH group, forming a carbocation. The speed of this reaction is proportional to the energy required to form the carbocation, so tertiary, benzylic, and allylic</> carbocations react quickly, while smaller, less substituted, alcohols react more slowly. The cloudiness observed is caused by the carbocation immediately reacting with the chloride ion creating an insoluble chloroalkane.

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