PATENT DETAILS

Patent ID:
37
Inventors:
Hang Tang, Lily Y Xie, David Dolphin, Tilak Wijesekera
Title:
Methods for Preparing Porphyrin-Like Compounds
Country:
United States
Patent No:
5512675
Grant Date:
1996-04-30
Abstract:
A method for synthesizing a porphocyanine having the formula:

Structure of porphocyanine' width=

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 (2) treating 3,3'-4,4'-tetraethyl-5,5'-diformyl-2,2'-dipyrromethane with ammonia, followed by column chromatography purification and evaporating to dryness the eluant containing the purified product.

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