Abstract
We report herein an improved method for the quantitative preparation of free bases of 5,10,15,20-tetraaryl-5,15-diazaporphyrinoid (TADAP) using Me₃SiBr–MeOH to treat the corresponding zinc(II) complexes. Metallation of the free base with HSiCl₃ followed by Si–X metathesis with SbF₃ and redox reactions afforded difluorosilicon(IV) complexes of TADAP.