New Procedures for the Synthesis and Analysis of 5,10,15,20-Tetrakis(sulphophenyl)porphyrins and Derivatives through Chlorosulphonation
Journal article published in 1996 by
Alexandra M. P. de SantAna,
Antonio M. D ' A Rocha Gonsalves,
Robert A. W. Johnstone,
Antonio M. D.-'.-A. Rocha Gonsalves,
Mariette M. Pereira,
Arménio C. Serra,
A. De SantAna,
Alexandra M. P. de SantAna,
Abílio J. F. N. Sobral 
,
Arménio C. Serra,
Paul A. Stocks,
Abílio J. F. N. Sobral,
Paul A. Stocks
,
Arménio C. Serra,
Paul A. Stocks,
Abílio J. F. N. Sobral,
Paul A. Stocks
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Abstract
Tetrakisarylporphyrins are conveniently chlorosulphonated in high yields. These chlorosulphonyl compounds may be converted in high yield into sulphonic acid derivatives through reaction with a variety of nucleophiles so as to give, for example, the free sulphonic acid, a sulphonamide or a sulphonate ester.