| Autor: |
Kogan, N. A., Kul'bitskii, G. N. |
| Zdroj: |
Chemistry of Heterocyclic Compounds; January 1978, Vol. 14 Issue: 1 p46-48, 3p |
| Abstrakt: |
The charge distribution in 1-methyl-2-carboxy-3-indolylphenylmethyl cation (II), which is formed by dissociation of the C-X bond in 1-methyl-2-carboxy-3-(a-X-benzyl)indoles (I) in H2SO4 solution, was studied by PMR and13C NMR spectroscopy. Cation II may have a structure with a positive charge on the benzyl carbon atom (IIa), the nitrogen atom (IIc), or on thea-carbon atom of the indole ring (IIc). Structures IIc and IIa make the major contributions to the II structure; this is confirmed by calculations by the Pariser-Parr-Pople (PPP) method within thes-p approximation. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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