N. Nishino, T. Sakamoto, H. Kiyota
Feb 5, 1993
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Journal
Chemistry Letters
Abstract
5,10,15,20-Tetrakis(2-amino-6-methoxycarbonylphenyl)porphyrin was synthesized and three atropisomers in four were successfully separated. Different from the related mono-substituted tetraphenylporphyrins (2-amino- and 2-methoxycarbonylphenylporphyrins), the rotation of the bond between phenyl and porphyrin rings was totally prohibited under thermal isomerization.