The method for the synthesis of indoles from nitropyridinium salts has been improved. A method for synthesizing novel derivatives of indoleninium quaternary salts has been developed. The condensation of indoleninium salts with formyl derivatives of crown ethers leading to styryl dyes is described. Photoisomerization and complexing of crown-ether dyes with ions of alkaline and alkaline-earth metals have been studied. The shift of the long-wave absorption maximum has been observed to depend on the size and charge density of the metal cation.
The method for the synthesis of indoles from nitropyridinium salts has been improved. A method for synthesizing novel derivatives of indoleninium quaternary salts has been developed. The condensation of indoleninium salts with formyl derivatives of crown ethers leading to styryl dyes is described. Photoisomerization and complexing of crown-ether dyes with ions of alkaline and alkaline-earth metals have been studied. The shift of the long-wave absorption maximum has been observed to depend on the size and charge density of the metal cation.
Indoles from 3-nitropyridinium salts 9. Methyl ethyl ketone N-methylimine in the indolization of 1-methyl-3-nitropyridinium salts
作者:M. A. Yurovskaya、A. V. Karchava、A. Z. Afanas'ev、Yu. G. Bundel'
DOI:10.1007/bf00766999
日期:1992.4
Gromov, S. P.; Bundel', Yu. G., Doklady Chemistry, 1985, vol. 281, p. 93 - 95
作者:Gromov, S. P.、Bundel', Yu. G.
DOI:——
日期:——
Synthesis of indoles from pyridinium compounds 10. Influence of solvents on process of indolization of 3-intropyridinium cations by the action of the N-methylimine of methyl ethyl ketone
作者:M. A. Yurovskaya、A. V. Karchava、Yu. G. Bundel'
DOI:10.1007/bf00531474
日期:1992.9
GROMOV, S. P.;BUNDEL, YU. G., DOKL. AN CCCP, 1985, 281, N 3, 585-588