Synthesis of quaternary salts, anhydrobases, and 9-(1,2-dimethoxycarbonyl-3-benzoyl-7-indolizinylmethylene)-4-azafluorene based on 9-(γ-pyridylmethylene)azafluorenes

Abstract

The ratios of E- to Z-isomers of the quaternary salts prepared by mono- and diquaternization of 9-(γ-pyridylmethylene)-1(4)-azafluorenes with iodomethane or bromoacetophenone have been determined. Conversion of the diphenacyl 9-(γ-pyridyl)-4-azafluorenium bromide into the corresponding anhydrobase (diylide), and also its condensation with acetylenedicarboxylate diesters to give 9-(1,2-dimethoxycarbonyl-3-benzoyl-7-indolizinylmethylene)-4-azafluorene have been carried out.

How to Cite
Kolyadina, N. M.; Soldatenkov, A. T.; Baktibaev, O. M.; Prostakov, N. S. Chem. Heterocycl. Compd. 1998, 34, 837. [Khim. Geterotsikl. Soedin. 1998, 34, 1088.]

For this article in the English edition, see DOI https://doi.org/10.1007/BF02311330