1H NMR spectra and structure of safranines. Hindered rotation of the 3-dialkylamino group in 7-azo derivatives
β Scribed by L.I. Proevska; I.G. Pojarlieff
- Book ID
- 108401616
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- English
- Weight
- 669 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0143-7208
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
## Abstract The proton spectra of bicyclo[3.2.0]heptβ2βenβ6βone and the 7,7βdimethyl, 7,7βdichloro and 7β__endo__βchloro derivatives were analysed and the chemical shifts and coupling constants are reported. Molecular modelling and chemical shift calculations together with the observed couplings sh
## Abstract The proton spectra of __exo__β and __endo__β3βthiatricyclo[4.2.1.0^2,5^]nonβ7βene 3,3βdioxide have been analysed and completely assigned. Considerations of coupling constants indicate that the thietane ring is nonplanar and that the norbornene residue is significantly distorted from the
In contrast to the reported reaction between trans-l-aminotetralin-2-01 and formaldehyde, which gives r-6a, c-9a,t-15a,t-18a-5,6,6a,9a,14,15,15a,18a-o~ahy~o-9,18-me~~odinaphtho [ 1,2-d: 1',2'-i] [1,6,3,8]dioxadiazecine, an examination of the 6 4.0-5.0 region of the 'H NMR spectra of the products of