Preferred Label : condensation reaction;
IUPAC definition : A (usually stepwise) reaction in which two or more reactants (or remote reactive sites
within the same molecular entity ) yield a single main product with accompanying formation
of water or of some other small molecule, e.g. ammonia, ethanol, acetic acid, hydrogen
sulfide. The mechanism of many condensation reactions has been shown to comprise consecutive
addition and elimination reactions, as in the base-catalysed formation of ( i E /i
)-but-2-enal (crotonaldehyde) from acetaldehyde, i via /i 3-hydroxybutanal (aldol).
The overall reaction in this example is known as the aldol condensation. The term
is sometimes also applied to cases where the formation of water or another simple
molecule does not occur, as in 'benzoin condensation'.;
Origin ID : C01238;
See also
A (usually stepwise) reaction in which two or more reactants (or remote reactive sites
within the same molecular entity ) yield a single main product with accompanying formation
of water or of some other small molecule, e.g. ammonia, ethanol, acetic acid, hydrogen
sulfide. The mechanism of many condensation reactions has been shown to comprise consecutive
addition and elimination reactions, as in the base-catalysed formation of ( i E /i
)-but-2-enal (crotonaldehyde) from acetaldehyde, i via /i 3-hydroxybutanal (aldol).
The overall reaction in this example is known as the aldol condensation. The term
is sometimes also applied to cases where the formation of water or another simple
molecule does not occur, as in 'benzoin condensation'.
