Fellow chemists,

   A small question.  I am synthesising copper(II) meso-tetra(4-aminophenyl
)porphyrin and I need a good way to seperate it from the uncopperated
porphyrin.  I have tried various techniques with columns (alumina, silicon
gel) and I have tried to filter and recrystalize in may different solvents
(THF, DMF, toluene, CHCl3, EtOH, MeOH, and a couple of others that I can’t
think of right now).  For reference the porphyrin (either) is not soluable
in water, EtOH, or MeOH; it is soluble in DMF, CHCl3, toluene, and THF.

   The other question is: Is it possible that the porphyrins are
polymerizing through the amino groups.  I ahve heard that it can happen
when it(the porph) is placed on an electrode with a current, but can it
happen with olny heat in a reflux.  The two refluxs that have worked for
me are DMF+Cu(OAc)2+porph and the same, but with toluene instead of DMF.
I have also tried a mix of CHCl3 and MeOH and it didn’t react (to
kinetically slow at this temp).

   Any help on either of these questions would be greatly appreciated.
   Thanks.

                   -Holden Harris

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|  Holden Harris               |  The McMillin Group            |
|  hhar…@sage.cc.purdue.edu  |  WTHR 236  Tele:(317)494-6922  |
|  Purdue University           |  W. lafayette, IN              |
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