A method for synthesizing a porphocyanine having the formula: ##STR1## where each R is ethyl, comprises either: (1) treating 3,3'-4,4'-tetraethyl-5,5'-bisaminomethyl-2,2'-dipyrromethane with a 10-fold excess of DDQ or...http://www.google.com/patents/US5512675?utm_source=gb-gplus-sharePatent US5512675 - Methods for preparing porphyrin-like compounds
