Synthèses dans ka série des bis-indéno-fluorènes II. Le dihydro-10,15-5H-bis-indéno [1, 2-a;2′,1′-i] fluorène
✍ Scribed by Louis Chardonnens; Wolfgang Hammer
- Publisher
- John Wiley and Sons
- Year
- 1966
- Tongue
- German
- Weight
- 404 KB
- Volume
- 49
- Category
- Article
- ISSN
- 0018-019X
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## Abstract On décrit de nouvelles synthèses de l'indéno‐(2′,1′: 2,3)‐fluorène (cisfluorènacène) et de l'indéno‐(1′,2′: 1,2)‐fluorène (trans‐fluorènaphéne).
8-Hydroxy-9,15-dihydro-7 H-diindeno [ Z , l -b ; 2', l'-g] fluorene, a derivative of a new mono-angular diindenofluorene system, has been synthesised in 6 steps (overall yield 420/,) starting from 9-oxo-fluorene-l-carbaltlehyde and acetophenone. The corresponding hydrocarbon could not be obtained by
## Abstract Starting from 3, 4‐dimethylfluorene the title compound, 5, 6‐dimethyl‐7, 12‐dihydro‐indeno[1,2‐a]fluorene (IV), is synthesized in four steps (overall yield 9%). The same hydrocarbon is also obtained in four steps starting from the phthalaconecarboxylic acid of __Gabriel__. This corrobor