Abstract
The Cu and Ni complexes of etioporphyrin II were subjected to Vilsmeier formylation, and a steric effect of the peripheral substituants on the direction of electrophilic meso substitution in the porphyrins was observed. The corresponding meso-N,N′-dimethylaminomethyl derivatives, which were separated by thin-layer chromatography (TLC) on silica, gel, were obtained. Their structures were proved by means of the IR, PMR, electronic, and mass spectra.
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See [1] for Communication 14.
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 11, pp. 1507–1511, November, 1982.
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Ponomarev, G.V., Kirillova, G.V., Lazukova, L.B. et al. Porphyrins. 15. Effect of stesic factors on the orientation of meso substitution in the formylation of porphyrins. First example of the chromatographic identification of isomers of porphyrins of the I and II types. Chem Heterocycl Compd 18, 1169–1173 (1982). https://doi.org/10.1007/BF00506366
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DOI: https://doi.org/10.1007/BF00506366