Fischer esterification
E180491
Fischer esterification is a classic acid-catalyzed organic reaction that forms esters from carboxylic acids and alcohols under reversible equilibrium conditions.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Fischer esterification canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1586895 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Fischer esterification Context triple: [Emil Fischer, knownFor, Fischer esterification]
-
A.
Schlick
Schlick is a German surname most notably associated with Moritz Schlick, a leading philosopher and founder of the Vienna Circle.
-
B.
Malate
Malate is a historic coastal district of Manila, Philippines, known for its nightlife, cultural landmarks, and proximity to Manila Bay.
-
C.
Feigl
Feigl is a German-language surname borne by various notable individuals, including philosophers, scientists, and artists.
-
D.
Tartegnin
Tartegnin is a small wine-producing municipality in the canton of Vaud in western Switzerland, situated above Lake Geneva in the La Côte region.
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E.
Schiff
Schiff is a surname most prominently associated with American actor Richard Schiff, known for his role as Toby Ziegler on the television series "The West Wing."
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Fischer esterification Target entity description: Fischer esterification is a classic acid-catalyzed organic reaction that forms esters from carboxylic acids and alcohols under reversible equilibrium conditions.
-
A.
Schlick
Schlick is a German surname most notably associated with Moritz Schlick, a leading philosopher and founder of the Vienna Circle.
-
B.
Malate
Malate is a historic coastal district of Manila, Philippines, known for its nightlife, cultural landmarks, and proximity to Manila Bay.
-
C.
Feigl
Feigl is a German-language surname borne by various notable individuals, including philosophers, scientists, and artists.
-
D.
Tartegnin
Tartegnin is a small wine-producing municipality in the canton of Vaud in western Switzerland, situated above Lake Geneva in the La Côte region.
-
E.
Schiff
Schiff is a surname most prominently associated with American actor Richard Schiff, known for his role as Toby Ziegler on the television series "The West Wing."
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
acid-catalyzed reaction
ⓘ
equilibrium reaction ⓘ esterification reaction ⓘ organic reaction ⓘ |
| byproductRemovalMethod |
azeotropic distillation of water
ⓘ
use of Dean–Stark apparatus ⓘ |
| catalyst |
p-toluenesulfonic acid
ⓘ
strong Brønsted acid ⓘ sulfuric acid ⓘ |
| catalystRegenerated | true ⓘ |
| classification | homogeneous catalysis ⓘ |
| commonExample | formation of ethyl acetate from acetic acid and ethanol ⓘ |
| conditions |
acidic medium
ⓘ
heating under reflux ⓘ |
| doesNotRequire | separate activating reagent like acid chloride ⓘ |
| drivingForce |
removal of water
ⓘ
use of excess alcohol ⓘ |
| equilibriumConstantDependsOn | structure of acid and alcohol ⓘ |
| equilibriumControlled | true ⓘ |
| intermediate |
oxonium ion
ⓘ
tetrahedral intermediate ⓘ |
| leChatelierPrincipleApplied | true ⓘ |
| limitation |
sensitive functional groups may decompose in strong acid
ⓘ
water produced shifts equilibrium backward ⓘ |
| mechanismStep |
deprotonation to form ester
ⓘ
elimination of water ⓘ formation of tetrahedral intermediate ⓘ nucleophilic attack of alcohol on protonated carbonyl ⓘ proton transfers within tetrahedral intermediate ⓘ protonation of carbonyl oxygen of carboxylic acid ⓘ |
| namedAfter | Emil Fischer ⓘ |
| product |
ester
ⓘ
water ⓘ |
| rateDependsOn |
acid concentration
ⓘ
reactant concentration ⓘ temperature ⓘ |
| reactant |
alcohol
ⓘ
carboxylic acid ⓘ |
| reactionType | nucleophilic acyl substitution ⓘ |
| requires | protonation of carbonyl group ⓘ |
| reverseReaction | acid-catalyzed ester hydrolysis ⓘ |
| reversibility | reversible ⓘ |
| sideReaction | carbocation formation at very strong acid and high temperature ⓘ |
| typicalSolvent | alcohol reactant ⓘ |
| usedFor |
preparation of simple esters
ⓘ
synthesis of flavor esters ⓘ synthesis of fragrance esters ⓘ |
| usedIn |
laboratory ester synthesis
ⓘ
undergraduate organic chemistry teaching ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Fischer esterification Description of subject: Fischer esterification is a classic acid-catalyzed organic reaction that forms esters from carboxylic acids and alcohols under reversible equilibrium conditions.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.