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what happens if a ether with a 2° alkyl group and a 1° alkyl group is cleaved with a halogen acid? To this question I have drawn a scheme below. The given ether is $\ce{2^0}$ group to the left and methyl to right. Acid cleavage with a halogenic acid involves an initial protonation of ether. In an $\ce{S_N^2}$ reaction of this ether, nucleophile $\ce{I^-}$ ...