Fig. 7: Analysis of the coordination of the bicarbonate and substrate reactants with the squaramide catalyst.
From: Bicarbonate-binding catalysis for the enantioselective desymmetrization of keto sulfonium salts
a R1 as a function of R2 for each structure. b R1 (in red) and R2 (in blue) as a function of the relative energy between the structures. c Most stable structure. d Most table structure where the R2 is smaller than R1.
