Heterobimetallic metallation studies of N,N-dimethylphenylethylamine (DMPEA): benzylic C–H bond cleavage/dimethylamino capture or intact DMPEA complex

The cleave and capture capacity of various bimetallic amido–alkyl mixtures is illustrated through reaction with the deprotonation sensitiveN,N-dimethylphenylethylamine.

Direct benzylic metalation of a phenethylamine derivative: potassium as the key to both generation and stabilization of a labile anion

t-BuLi-t-BuOK selectively metalates the benzylic position of 2-phenylethyldimethylamine under mild conditions without occurrence of β-elimination in the resulting metalated species. Theoretical and structural studies indicate that potassium is crucial for both the lowering of the barrier of the initial deprotonation step and the stabilization of the labile anion.

Benzo[c]phenanthridine bases and their antituberculosis activity

The antituberculosis activity of fully-aromatized quaternary benzo[c]phenanthridine bases prepared in our laboratory was tested under the Tuberculosis Antimicrobial Acquisition and Coordinating Facility (TAACF) program. This review summarizes our syntheses of these bases and discusses their structure-activity relationships against primary tuberculosis.