Investigation of 2,5-disubstituted silylfurans by NMR spectroscopy

Abstract

The ¹H,¹³C, and ²⁹Si NMR spectra of 5-substituted furfurals and the corresponding diethyl acetals containing various alkylsilyl substituents at position 5 of the furan ring were studied in comparison with the carbon- and sulfur-containing analogs and also with a series of monosubstituted silylfurans. In cases where the substituent was conjugated with the residue of the furan molecule the effect of the substituent at position 5 of the furan was transmitted to C_α of the aldehyde group. The reverse effect was also observed. It was determined that the contribution from the aldehyde group and the substituents at position 5 of the furan to the screening of the carbon nuclei of the furan ring was not additive.

How to Cite
Lukevits, É.; Demicheva, L. E.; Popelis, Yu. Yu. Chem. Heterocycl. Compd. 1996, 32, 387. [Khim. Geterotsikl. Soedin. 1996, 449.]

For this article in the English edition, see DOI https://doi.org/10.1007/BF01165897