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What is the correct order of reactivity of alcohols toward reactions involving cleavage of C-O bond?

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What is the correct order of reactivity of alcohols toward reactions involving cleavage of C-O bond?

(a) 1°>2°>3°

(b) 3°>2°>1°

(c) 1°>3°>2°

(d) 3°>1°>2°

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My query is from Alcohols and Phenols topic in portion Alcohols, Phenols and Ethers of Chemistry – Class 12

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Correct option is (b) 3°>2°>1°

The best explanation: Alkyl groups are electron releasing groups and increase the electron density towards oxygen making the C-O more polar. This makes the cleavage of the bond between C and O a lot easier.

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