Knoevenagel Condensation · Aldehyde + Active Methylene
unseel.com · PhCHO + CH₂(CO₂Et)₂ → PhCH=C(CO₂Et)₂ + H₂O
Stage reactants
Base piperidine (cat.)
Step reactants assembled
Aryl ring (aldehyde)
Carbonyl O
Ester C=O (EWG)
Active-methylene C / new C=C
Amine catalyst / leaving H₂O
Unseel.com · Knoevenagel Condensation