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10.4: Acetals and Ketals - Chemistry LibreTexts

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Hemiacetals and hemiketals can react with a second alcohol nucleophile to form an acetal or ketal. The second alcohol may be the same as the first (ie. if R2=R3 in the scheme below), or different.

Overview Hemiacetals and hemiketals can react with a second alcohol nucleophile to form an acetal or ketal. The second alcohol may be the same as the first (ie. if \(R_2 = R_3\) in the scheme below), or different. Although we focus here on biological reactions, it is instructive in this case to consider non-biological acetal-forming reactions before we look at their biochemical counterparts. In a non-enzymatic context, acetal/ketal formation - just like hemiacetal/hemiketal formation - is generally catalyzed by a strong acid. Acid-catalyzed acetal formation (non-biological) The role of the aci

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