posted by Andrew on .
How would i explain the readiness of allyl alcohol to react with the Lucas test????
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?
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.