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Reversible addition at a carbonyl group

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Presentation on theme: "Reversible addition at a carbonyl group"— Presentation transcript:

1 Reversible addition at a carbonyl group
Reversible addition at a carbonyl group (A) If X and Y are not good leaving groups but the nucleophile is a good leaving group, then the reaction may reverse, as seen in the acid-catalysed reaction of a ketone with an alcohol. This reaction also occurs with aldehydes and the tetrahedral product is called a hemiacetal. (B) Formation of hemiacetal occurs during the cyclization of glucose. Amanda L. Jonsson et al. Essays Biochem. 2017;61: ©2017 by Portland Press Ltd

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