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  3. CHARACTERIZATION OF DECAMETHYL AND ETHOXYCARBONYL PENTAPHYRINS

CHARACTERIZATION OF DECAMETHYL AND ETHOXYCARBONYL PENTAPHYRINS

TitleCHARACTERIZATION OF DECAMETHYL AND ETHOXYCARBONYL PENTAPHYRINS
Publication TypeJournal Article
Year of Publication1995
AuthorsDansodanquah, RE, Xie, LY, Dolphin, D
JournalHeterocycles
Volume41
Pagination2553-2564
Date PublishedNov
Type of ArticleArticle
ISBN Number0385-5414
KeywordsCOMPLEX, EXPANDED PORPHYRIN, macrocycles, SAPPHYRINS
Abstract

The syntheses of decamethyl- and ethoxycarbonyl-pentaphyrins are described. Their spectroscopic characterizations are presented in comparison with the permethyl derivatives of porphyrin, sapphyrin and hexaphyrin. The ethoxycarbonyl containing pentaphyrins are the only examples, amongst the expanded polypyrrolic macrocycles, that have an electron withdrawing group directly attached to the macrocyclic ring system. Elimination of a pyrrole and methine carbon unit in the mass spectrometer has been observed as a common feature for the pentaphyrin free bases as well as their metal derivatives.
URL<Go to ISI>://A1995TF56200017