Abstract
By the condensation of α-halogenomethyl derivatives of pyrroles with α-unsubstituted pyrroles the synthesis of the following unsymmetrical dipyrrolylmethanes has been effected: 5-benzyloxycarbonyl-5′-ethoxycarbonyl-3, 3′-di(β-methoxycarbonylethyl)-4,4′-dimethyl-2,2′-dipyrrolylmethane (IIIa), 5-benzyloxycarbonyl-5′-ethoxycarbonyl-3-(β-methoxycarbonylethyl)-4, 4′-diniethyl-3′-n-propyl-2,2′-dipyrrolylmethane(IIIb), 3-acetyl-5-benzyloxycarbonyl-4′-ethyl-5′-methoxycarbonyl-3′, 4-dimethyl-2,2′-dipyrrolylmethane (IIIc), and 3-bromo-5-benzyloxycarbonyl-4′-ethyl-5′-methoxycarbonyl-3′, 4-dimethyl-2,2′-dipyrrolylmethane (IIId). Hydrogenation of the unsymmetrical dipyrrolylmethanes IIIa, b, c, and d has given the corresponding monocarboxylic acids IVa, b, c, and d. The formylation of the dipyrrolylmethanemonocarboxylic acid IVa has given 5′-ethoxycarbonyl-5-formyl-3,3′-di(β-methoxycarbonylethyl)-4, 4′-dimethyl-2,2′-dipyrrolylmethane (V).
Similar content being viewed by others
Literature cited
E. I. Filippovich, T. A. Palagina, G. S. Postnikova, R. P. Evstigneeva and N. A. Preobrazhenskii, KhGS [Chemistry of Heterocyclic Compounds], 1, 734 (1965).
V. N. Luzgina, E. I. Filippovich, and N. A. Preobrazhenskii, ZhOKh, 38, 1372 (1968).
Author information
Authors and Affiliations
Additional information
For communication II, see [1].
Deceased.
Translated from Khimiya Geterotsiklicheskikh Soedinenii, Vol. 6, No. 8, pp. 1045–1047, August, 1970.
Rights and permissions
About this article
Cite this article
Filippovich, E.I., Pilipenko, T.N., Demidkina, T.V. et al. Synthetic studies in the field of chlorobium chlorophyll. Chem Heterocycl Compd 6, 972–974 (1970). https://doi.org/10.1007/BF00480626
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00480626