The recent communication by Shani (1) in which the photolysis of cis, cis-cyclodeca---3,8-diene-1, 6-dione (I) is reported to give cis,\*, cis-tricyclo[5. 3. 0. 0 2, (+d ecane-4,9--dione prompts us to report results we had obtained independently which lead to the cis, -anti, cis (IIa) stereochemical
1,6-Dioxo-cyclodeca-3,8-dien und 1,6-Diamino-cyclodeca-3,8-dien. Cyclodecapolyene, 1. Mitteilung
β Scribed by C. A. Grob; P. W. Schiess
- Publisher
- John Wiley and Sons
- Year
- 1960
- Tongue
- German
- Weight
- 712 KB
- Volume
- 43
- Category
- Article
- ISSN
- 0018-019X
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β¦ Synopsis
Abstract
1,6βDioxoβcyclodecaβ3,8βdiene (4) and the cis and trans forms of 1,6βdiaminoβcyclodecaβ3,8βdiene (7) have been synthesized from naphthalene via isotetralin (1). No transannular reaction was observed during the reduction of the dioxime of (4) to the diamine (7).
π SIMILAR VOLUMES
A study of the photochemistry of cis cis-cyclodeca-3,8-diem-1,6-dione (I) has recently -Ireported (1). We have been independently engaged in studying the photochemistry of I and present our results which differ significantly from those previously reported (1).
The transannular photocyclization of the cis,cis-cyclodecs-1,6+lienes to the tricyolo 5.3.0.02p6 --C 3 decane (1) may be explained due to the proximity in space of the two double bonds in the ~~hamnocks conformation I (2). Hence, in an intramolecular photocyclization of the isomeric trans,trans,cycl
**Constituents of __Osmanthus__ Absolute, Ist communication:2,5βEpoxyβmegastigmaβ6,8βdienes** Besides some further ionone derivatives we identified two new bicyclic oxacompounds (**1a**/**1b**) of the megastigmane type in the Osmanthus absolute. Isolation, special features of their spectral datas a