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Preparation of Alcohols from Grignard Reagents

Give structur...

Question

Give structures of the products you would expect when each of the following alcohol reacts with (a) HCl-ZnCl₂ (b) HBr and (c) SOCl₂.

(i) Butan-1-ol

(ii) 2-Methylbutan-2-ol

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Solution

(a)

(i)

Primary alcohols do not react appreciably with Lucas’ reagent (HCl-ZnCl₂) at room temperature.

(ii)

Tertiary alcohols react immediately with Lucas’ reagent.

(b)

(i)

(ii)

(c)

(i)

(ii)

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