Interaction | Reaction | Process     Data Page

Under basic conditions "active methylene" aldehydes will condense to aldols. High yield of "crossed" aldol product can be obtained if two aldehydes are used, one of which lacks acidic hydrogens (eg. benzaldehyde). Under acidic or high temperature conditions aldols are liable to eliminate water to form the conjugated unsaturated aldehyde.

Generic Organic reaction
RCHO
  +  
RCH2CHO
  +  
OH–(aq)
         
Reactant Page Go To Go To
Aldehyde (generic)     Reactions Using    Reactions Forming
Aldehyde, alpha-hydrogen (generic)     Reactions Using    Reactions Forming
Aqueous alkali, 0.05 to 1.0 molar (generic) Solvent    Reactions Using    Reactions Forming
beta-Hydroxy aldehyde (generic)     Reactions Using    Reactions Forming

Interaction, Reaction, Process defined as:
Addition: Nucleophilic
Strategic Bond Formation

© Mark R. Leach 1999 –

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