Serendipitous synthesis of unsymmetrical porphyrazine: Incomplete transesterification during macrocyclization
[ 1 ] Instytut Chemii Bioorganicznej Polskiej Akademii Nauk, Polska Akademia Nauk | [ P ] pracownik
2021
artykuł naukowy
angielski
EN The macrocyclization reaction of dimercaptomaleonitrile derivative containing biphenylmethylsulfanyl substituents with methoxycarbonyl groups resulted in an unexpected synthesis of unsymmetrical porphyrazine in which one of the methoxycarbonyl groups was not transesterificated. The UV-Vis, MS MALDI, and various NMR techniques were utilized to characterize the obtained product. Two-dimensional techniques, including H-1-H-1 COSY, H-1-C-13 HSQC, and H-1-C-13 HMBC, allowed to assign the H-1 and C-13 chemical shifts to the corresponding hydrogen and carbon atoms in the porphyrazine structure.
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