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Synthèses dans la série des bis-indéno-anthracènes, III. Le dioxo-15,16-dihydro-15, 16-bis-indéno[1.2-a;2′.1′-c]anthracène et le tétraoxo-5,10,15,16-tétrahydro-5,10,15,16-bis-indéno[1.2-a; 2′.1′-c]anthracène

✍ Scribed by Louis Chardonnens; François Schorderet


Publisher
John Wiley and Sons
Year
1972
Tongue
German
Weight
379 KB
Volume
55
Category
Article
ISSN
0018-019X

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✦ Synopsis


The title compounds, a dioxo (XVIII) and a tetraoxoderivative (VI) of a new diindenoanthracene, are synthesized in several steps (overall yield 35 and 26%, respectively) starting from 2,3-dimethyl-1,4-diphenyl-butadiene-l, 3 (VIII). The corresponding hydrocarbon could not be obtained by reduction.

Des trois bis-indCno-anthracknes I, I1 et 111, rksultant formellement de l'accolement de deux molCcules d'indkne par leur cycle pentagonal sur le m$me cycle hexagonal de l'anthrache, les deux premiers, soit le dihydr0-5,16-bis-indCno[Z, l-a ; 2'. 1'-clanthracbne (I) et le dihydro-9,16-bis-indCno[2.1-a; 1'2'-clanthradne (11) ont ktC dCcrits rkcemment [Z] [l]. La construction du troisikme systkme, celui du dihydro-15,16-bis-indkno[l.2-a; T.1'-clanthrache (111), fait l'objet du prCsent mkmoire.


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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