Inverse Enantioselectivity with Catalyst Loading in Enantioselective Self-Benzoin Condensation using Triazolium-based N-Heterocyclic Carbene Catalyst
作者:Hui Mao、Shu Lan An、Sun-Min Kim、Jung-Woon Yang
DOI:10.5012/bkcs.2011.32.12.4408
日期:2011.12.20
which are Lewis base catalysts, represent aversatile class of organocatalysts that allow the addition of avariety of different electrophiles to carbonyl or Michaelacceptors via Umpolung or Breslow intermediates. Thebenzoin condensation (BC) reaction is a representativeexample of the Umpolung process in which a NHC is usedto generate an acylanion via polarity reversal of aldehydesthat can react with other