Breslow intermediate in organocatalysis

Target entity: Breslow intermediate in organocatalysis
Context triple: [Ronald Breslow, knownFor, Breslow intermediate in organocatalysis]

• A. Eschenmoser sulfide contraction
  Eschenmoser sulfide contraction is an organic rearrangement reaction that converts certain sulfur-containing intermediates into carbonyl compounds, widely used in complex molecule and natural product synthesis.
• B. Corey–Winter olefin synthesis
  Corey–Winter olefin synthesis is an organic reaction that converts 1,2-diols into alkenes via cyclic thiocarbonate intermediates, widely used for stereospecific formation of double bonds.
• C. 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.
• D. 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.
• E. 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.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: Breslow intermediate in organocatalysis
Target entity description: 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.

• A. Eschenmoser sulfide contraction
  Eschenmoser sulfide contraction is an organic rearrangement reaction that converts certain sulfur-containing intermediates into carbonyl compounds, widely used in complex molecule and natural product synthesis.
• B. Corey–Winter olefin synthesis
  Corey–Winter olefin synthesis is an organic reaction that converts 1,2-diols into alkenes via cyclic thiocarbonate intermediates, widely used for stereospecific formation of double bonds.
• C. 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.
• D. 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.
• E. 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.
• F. None of above. chosen