Research Article
Spectrometric Study of the Nitrile-Ketenimine Tautomerism
Table 4
Nuclear magnetic resonance spectra (1H and 13C) of ethyl-4,4-dicyano-2,2-diethyl-3-methyl-3-butenoate.
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| | 1H NMR | (CDCl3) (ppm): 0.9-1.0 (t, J: 7.5 Hz (a)); 1.1-1.2 (t, J: 7.2 Hz (d)); 1,7-1.8 (q, J: 7.5 Hz (b)); 2,1 (s, (c)); 4.1 (q, J: 7.2 Hz (e)); 4.9-5.2(2d, J: 2.2 Hz (f)); 7.6 (s, (g)). |
| | 13C NMR | (CDCl3) (ppm): 11.2 (a); 14.1 (d); 18.7 (c); 29.5 (b); 37.5 (h); 48.6 (j); 62.0 (e); 80.2 (m); 113.2 (f); 116.5 (l); 140.8 (i); 174.3 (k); 179.8 (n); 190.3 (g). |
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