Heterocycles. CLXIX. Barriers to rotation in some N,N-Dimethyl-N′-heteroaryl, N,N-Diethyl-N′-heteroaryl-substituted formamidines and N,N-Dimethyl-N′-heteroaryl-substituted acetamidines
✍ Scribed by M. Drobnič-Košorok; S. Polanc; B. Stanovnik; M. Tišler; B. Verček
- Book ID
- 112125422
- Publisher
- Journal of Heterocyclic Chemistry
- Year
- 1978
- Tongue
- English
- Weight
- 510 KB
- Volume
- 15
- Category
- Article
- ISSN
- 0022-152X
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Bamers to rotation about the partial double C-N' bond were determined from line shape analysis of 'H and I3C dynamic NMR spectra of N',N'-dimethyl-NZ-substituted phenylacetamidines with twelve different substituents on the phenyl ring. The values of AGGc are 51.2-58.7 kJ mol-' and the correlation wi
## Abstract An efficient synthesis of 5‐heteroaryl‐ and 5,7‐bis(heteroaryl)azulene derivatives was established for first time. The reaction proceeded through electrophilic substitution of 1,3‐di‐__tert__‐butylazulene (**1**) with the triflates of N‐containing heterocycles, in the presence of excess