Fulvenes and thermochromic ethylenes—XXXVI : NMR studies in the series of 2,3,6,7-dibenzoheptafulvene and 2,3,6,7-dibenzotropone
✍ Scribed by M. Rabinovitz; I. Agranat; E.D. Bergmann
- Publisher
- Elsevier Science
- Year
- 1966
- Tongue
- French
- Weight
- 335 KB
- Volume
- 22
- Category
- Article
- ISSN
- 0040-4020
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The reaction of 2,6-diarylidenecyclohexanones with hydrazine hydrate in glacial acetic acid resulted in the formation of diastereomers of (E)-2-acetyl-3-aryl-7-arylidene-3,3a,4,5,6,7-hexahydroindazoles. The relative conÐgurations of these diastereomers were unambiguously assigned using 1H and 13C NM
## Abstract The proton spectra of bicyclo[3.2.0]hept‐2‐en‐6‐one and the 7,7‐dimethyl, 7,7‐dichloro and 7‐__endo__‐chloro derivatives were analysed and the chemical shifts and coupling constants are reported. Molecular modelling and chemical shift calculations together with the observed couplings sh