Stereoselective C-alkylation of di-imine macrocycles: a versatile route to a series of meso-dialkyl-substituted macrocyclic tetramines
Abstract
Macrocycles containing two o-iminoanilino units undergo stereoselective C-alkylation on treatment with Grignard reagents or lithium alkyls to give the meso-dialkyl-substituted macrocyclic tetra-amines.