PROTONATION AND ALKYLATION OF CROSS-CONJUGATED KETONES CONTAINING A TERMINAL N-METHYLPYRROLE RING

Authors

  • Ж. А. Красная N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow 119991
  • Ю. В. Смирнова N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow 119991

Keywords:

cross-conjugated polyene ketones, N-methylpyrroles, polymethine salts, cyanine dyes

Abstract

The protonation and alkylation of cross-conjugated ketones containing a terminal N-methylpyrrole ring takes place at the oxygen atom. Protonation is accompanied by a strong bathochromic shift of the absorption maximum in the electron spectrum, while alkylation leads to ethoxypolymethine salts. The possibility of using these salts for the synthesis of ethoxycyanine dyes was studied.

How to Cite
Krasnaya, Zh. A.; Smirnova, Yu. V.  Chem. Heterocycl. Compd. 2003, 39, 1307. [Khim. Geterotsikl. Soedin. 2003, 1486.]

For this article in the English edition, see DOI 10.1023/B:COHC.0000010644.09613.52

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Published

2003-10-25

Issue

No. 10 (2003)

Section

Original Papers