SEARCH Articles Figures Tables And Mannich reactions Diastereoselective reaction Diastereoselective reactions Diastereoselectivity Diastereoselectivity reaction Direct product Direct production Direct reactions Directed reactions Mannich direct Mannich reaction products Mannich reaction with Product diastereoselective Product directives Reaction center Reaction direct reactions Reaction direction Reaction stereogenic Stereogenic center Stereogenic centers, and Two Reaction Directions Two-center Two-directional