SEARCH Articles Figures Tables 2-Substituted alkyl 3- 4-Substituted formation Alkyl formation Alkyl imines Alkyl substitute Alkylation nucleophilic Imine alkylations Imines alkylation Imines formation Imines nucleophilic substitution Imines substituted Imines, alkylation formation Nucleophile alkyl Nucleophiles alkylations Nucleophiles formation Nucleophiles, alkylation Nucleophilic alkyl substitution Nucleophilic substitution formation Substitution alkylation