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Porphyrins and their synthesis from dipyrromethanes and aldehydes

United States Patent

*** EXPIRED ***
June 2, 1998
View the Complete Patent at the US Patent & Trademark Office
The invention comprises new compositions of matter, which are iron, manganese, cobalt or ruthenium complexes of porphyrins having hydrogen, haloalkyl or haloaryl groups in meso positions, two of the opposed meso atoms or groups being hydrogen or haloaryl, and two of the opposed meso atoms or groups being hydrogen or haloalkyl, but not all four of the meso atoms or groups being hydrogen. The invention also comprises new compositions of matter in which all four of the meso positions are substituted with haloalkyl groups and the beta positions are substituted with halogen atoms. A new method of synthesizing porphyrinogens is also provided.
Wijesekera; Tilak (Glen Mills, PA), Lyons; James E. (Wallingford, PA), Ellis, Jr.; Paul E. (Downingtown, PA)
Sun Company, Inc. (Marcus Hook, PA)
08/ 672,524
June 25, 1996
The Government of the United States of America has rights in this invention pursuant to Cooperative Agreement No. DE-FC21-90MC26029 awarded hy the U. S. Department of Energy.