Tetrahedron

Synthesis and structural study on α-substituted-1-styrylpyridinium salts: Reinvestigation of krohnke condensation

J Alvarez-Builla, JL Novella, E Galvez, P Smith…

文献索引：Alvarez-Builla, J.; Novella, J. L.; Galvez, E.; Smith, P.; Florencio, F.; et al. Tetrahedron, 1986 , vol. 42, # 2 p. 699 - 708

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被引用次数: 11

摘要

Kröhnke condensation of several cycloimmonium salts with p-dimethylaminobenzaldhyde has been studied. X-Ray diffraction, IR and Raman spectra, 1H-and 13C-NMR and UV spectra of the products are discussed, being compared, when necessary, with the starting pyridinium salts. All compounds showed the Z configuration, corresponding to the more stable structure, except one, in which steric factors were predominant.