SEARCH Articles Figures Tables Bases Cinchona alkaloids Bases Cinchona alkaloids Bifunctional catalysts cinchona alkaloid-based Cinchona Cinchona alkaloid catalysis thiourea-based Cinchona alkaloid-based catalysts Cinchona alkaloid-based catalysts Michael addition Cinchona alkaloid-based catalysts addition Cinchona alkaloid-based catalysts amine Cinchona alkaloid-based catalysts cycloaddition Cinchona alkaloid-based catalysts nucleophilic substitution Cinchona alkaloid-based catalysts thiourea Cinchona alkaloid-based domino Michael reactions Cinchona alkaloids enantioselective Michael addition, base Cinchona bases