Synthesis and Characterization of Some Novel Dendritic Phenothiazine Derivatives

Three novel dendritic phenothiazine derivatives consisting of a biphenyl core, phenothiazine branching units, and terminal 3,7-di-tert-butylphenothiazine fragments have been synthesized starting from 3,7-di-tert-butylphenothiazine, 4,4′-diiodobiphenyl, and 3,7-diiodophenothiazine. The product structure was confirmed by IR and 1H NMR spectra.