SEARCH Articles Figures Tables Boronic acid-Nucleophile Complex Formed in the Enzyme Active Site as a way to Improve Potency and Selectivity Nucleophilic additions, facial selectivity Nucleophilic aromatic substitution ortho-selectivity Nucleophilic reactions constant selectivity relationship Nucleophilic reactions selectivity Nucleophilic selectivity Nucleophilic selectivity Nucleophilic substitution diene selective formation Nucleophilic substitution positional selectivity Nucleophilic substitution—continued selectivity Selected SN Reactions of Heteroatom Nucleophiles at the Carboxyl Carbon Unsymmetrical nucleophiles lead to selectivity questions