Triple

T6995010
Position Surface form Disambiguated ID Type / Status
Subject David A. Evans E162185 entity
Predicate notableWork P4 FINISHED
Object Evans auxiliary-based asymmetric synthesis
Evans auxiliary-based asymmetric synthesis is a widely influential chiral auxiliary strategy developed by David A. Evans that enables highly stereoselective construction of complex molecules in organic synthesis.
E634404 NE FINISHED

How this triple was built (4 steps)

Every LLM step that produced this triple, in pipeline order — named-entity classification, the disambiguation choices (the exact options shown, with the pick highlighted), and the generated description. The batch + timestamp of each is in the Provenance table below.

NER Named-entity recognition gpt-5-mini
Instruction
Given a phrase, classify it is english named entity (e.g., persons, organizations, works of art) in Latin script, or not (e.g., literals, dates, URLs, verbose phrases). For disambiguation, the statement where the phrase occurs as object is also given. Please return a JSON object with `phrase` (string, the phrase being analyzed) and `is_ne` (boolean, indicating whether the phrase is a Named Entity).
Input
Phrase: Evans auxiliary-based asymmetric synthesis | Statement: [David A. Evans, notableWork, Evans auxiliary-based asymmetric synthesis]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Evans auxiliary-based asymmetric synthesis
Context triple: [David A. Evans, notableWork, Evans auxiliary-based asymmetric synthesis]
  • A. Enantioselective Chemical Synthesis
    Enantioselective Chemical Synthesis is a foundational work in organic chemistry that systematically presents strategies and methods for constructing chiral molecules with high stereocontrol.
  • B. Trost asymmetric allylic alkylation
    Trost asymmetric allylic alkylation is a palladium-catalyzed enantioselective carbon–carbon bond-forming reaction that enables the synthesis of chiral molecules from prochiral allylic substrates.
  • C. Sharpless asymmetric dihydroxylation
    Sharpless asymmetric dihydroxylation is a landmark chemical reaction that uses chiral catalysts to add two hydroxyl groups across an alkene with high enantioselectivity, revolutionizing asymmetric synthesis in organic chemistry.
  • D. Breslow intermediate in organocatalysis
    The Breslow intermediate in organocatalysis is a transient nucleophilic carbene-derived species central to thiamine- and N-heterocyclic carbene-catalyzed umpolung reactions of carbonyl compounds.
  • E. Corey–Nicolaou macrolactonization
    Corey–Nicolaou macrolactonization is a widely used organic synthesis reaction that forms large-ring lactones from hydroxy acids via an activated ester intermediate.
  • F. None of above. chosen
  • G. Unsure - the case is ambiguous/there is not enough information to decide.
NEDg Description generation gpt-5.1
Instruction
Generate a one-sentence description of the target entity. 
You are given a context triple in the form (subject, predicate, object), where the object is the target entity. 
# Instructions
Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. 
Avoid repeating the information from the triple, unless really essential.
# Response Format
Return only the sentence: "Description: [one-sentence description of the target entity]"
Input
Entity: Evans auxiliary-based asymmetric synthesis
Triple: [David A. Evans, notableWork, Evans auxiliary-based asymmetric synthesis]
Generated description
Evans auxiliary-based asymmetric synthesis is a widely influential chiral auxiliary strategy developed by David A. Evans that enables highly stereoselective construction of complex molecules in organic synthesis.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Evans auxiliary-based asymmetric synthesis
Target entity description: Evans auxiliary-based asymmetric synthesis is a widely influential chiral auxiliary strategy developed by David A. Evans that enables highly stereoselective construction of complex molecules in organic synthesis.
  • A. Enantioselective Chemical Synthesis
    Enantioselective Chemical Synthesis is a foundational work in organic chemistry that systematically presents strategies and methods for constructing chiral molecules with high stereocontrol.
  • B. Trost asymmetric allylic alkylation
    Trost asymmetric allylic alkylation is a palladium-catalyzed enantioselective carbon–carbon bond-forming reaction that enables the synthesis of chiral molecules from prochiral allylic substrates.
  • C. Sharpless asymmetric dihydroxylation
    Sharpless asymmetric dihydroxylation is a landmark chemical reaction that uses chiral catalysts to add two hydroxyl groups across an alkene with high enantioselectivity, revolutionizing asymmetric synthesis in organic chemistry.
  • D. Breslow intermediate in organocatalysis
    The Breslow intermediate in organocatalysis is a transient nucleophilic carbene-derived species central to thiamine- and N-heterocyclic carbene-catalyzed umpolung reactions of carbonyl compounds.
  • E. Corey–Nicolaou macrolactonization
    Corey–Nicolaou macrolactonization is a widely used organic synthesis reaction that forms large-ring lactones from hydroxy acids via an activated ester intermediate.
  • F. None of above. chosen

Provenance (5 batches)

The batch behind each pipeline step, in order, with when it ran. Timestamps are batch-level — stages were processed in waves, so the object chain (NER → NED1 → NEDg → NED2) reads in order, but predicate / elicitation batches can sit in a different wave.

Step Stage Batch ID Status When
creating Elicitation batch_69c68857ffc08190857dc62cd5253777 completed March 27, 2026, 1:38 p.m.
NER Named-entity recognition batch_69c6dbec259c8190bb4cfbc1ff6fc786 completed March 27, 2026, 7:35 p.m.
NED1 Entity disambiguation (via context triple) batch_69c76a1fa11481908450978acc1e0913 completed March 28, 2026, 5:41 a.m.
NEDg Description generation batch_69c76b84f5688190a0aef7cd8695c6b0 completed March 28, 2026, 5:47 a.m.
NED2 Entity disambiguation (via description) batch_69c76be95ecc8190a57ff197f236d434 completed March 28, 2026, 5:49 a.m.
Created at: March 27, 2026, 2:32 p.m.