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Japp–Maitland condensation
Condensation
Overview
The Japp–Maitland condensation is an organic reaction and a type of Aldol reaction and a tandem reaction. In a reaction between the ketone 3-pentanone and the aldehyde benzaldehyde catalyzed by base the bis Aldol adduct is formed first. The second step is a ring-closing reaction when one hydroxyl group displaces the other in a nucleophilic substitution forming an oxo-tetrahydropyran.
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