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pro vyhledávání: '"Hideki Umekawa"'
Publikováno v:
Chemistry Letters. :37-40
A new picket-fence porphyrin precursor with carboxy terminal groups has been prepared. Four atropisomers of meso-tetra(o-methoxycarbonylphenyl)porphyrin have been separated by chromatography. The conformational stability of the αααα-isomer was ex