Download full text in PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... Studies on N-metallo imines: synthesis of N-unsubstituted aziridines from N-trimethylsilyl imine and lithium enolates of α-halo esters. ... Addition of lithium enolates of 2-halo carboxylic esters to N-trimethylsilyl imines results in the formation of 1H-aziridine derivatives, in the ...