Abstract
A number of symmetrical and unsymmetrical dipyrrylmethanes are synthesized. These are 4, 4′-dimethyl-3-(β-carbomethoxyethyl)-3′n-propyl-5, 5′-dicarbobenzoxydipyrrylmethane (III, R=CH2CH2COOCH3, R′=n-C3H7); 4, 4′-dimethyl-3-(β-carbomethoxyethyl)-3′-n-propyl-5, 5′-dicarboxydipyrrylmethane(IV, R=CH2CH2COOCH3, R′=n-C3H7); 3-bromo-3′, 4-dimethyl-4′-ethyl-5, 5′-dicarbobenzoxydipyrrylmethane (VII, R=Br); 3, 3′-dibromo-4, 4′ -dimethyl-5, 5′dicarbobenzoxydipyrrylmethane (V, R=Br); 3′, 4-dimethyl-3-ethyl-4′-carboethoxy-5-carbobenzoxydipyrrylmethane (IX, R=Et).
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E. I. Filippovich, R. P. Evstigneeva, G. S. Postnikova, T. A. Palagina, A. N. Cherkasov, and N. A. Preobrazhenskii, KhGS [Chemistry of Heterocyclic Compounds], 728, 1965.
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E. I. Filippovich, V. N. Luzgina, R. P. Evstigneeva, and N. A. Preobrazhenskii, ZhOKh, 33, 2130, 1963.
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For Part I see [1].
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Filippovich, E.I., Palagina, T.A., Postnikova, G.S. et al. Synthetic studies of pigments of green bacteria. Chem Heterocycl Compd 1, 496–498 (1965). https://doi.org/10.1007/BF00469926
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DOI: https://doi.org/10.1007/BF00469926