کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5226936 1383590 2006 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Spectroscopic characterization of the oxidation control of the iso-pentaphyrin/pentaphyrin system
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Spectroscopic characterization of the oxidation control of the iso-pentaphyrin/pentaphyrin system
چکیده انگلیسی

We have recently described the synthesis of two porphyrogenic macrocycles: 20-phenyl-2,13-dimethyl-3,7,8,12-tetraethyl-[24]iso-pentaphyrin (1) and 20-phenyl-2,13-dimethyl-3,7,8,12-tetraethyl-[22]pentaphyrin (2) (J. Med. Chem. 2006, 49, 196-204). We found that the structure of iso-pentaphyrin is influenced by the acidity of the medium. By adjusting the TFA concentration, we solved two isomers of iso-pentaphyrin: 1 and 1A. At high TFA concentration iso-pentaphyrin is present only as 1, which is slowly oxidized into the aromatic macrocycle 2 upon exposure to air. The correlation between acidic conditions, isomer structures, and oxidation is discussed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tetrahedron - Volume 62, Issue 34, 21 August 2006, Pages 8147-8151
نویسندگان
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