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Fluorénacènes et fluorénaphènes Synthèses dans la série des indéno‐fluorènes, XIX Dérivés tétraméthylés du trans ‐fluorénaphène et du trans ‐fluorénacène
Author(s) -
Chardonnens Louis,
Bitsch Serge,
Häger Josef
Publication year - 1975
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19750580219
Subject(s) - chemistry , fluorene , medicinal chemistry , friedel–crafts reaction , condensation , stereochemistry , organic chemistry , polymer , physics , thermodynamics , catalysis
Abstract By condensation of isophthaloyldichloride resp. of terephthaloyldichloride with 4‐bromo‐1,2‐xylene according Friedel‐Crafts , followed in each case by a double cyclisation and a final reduction, the 2,3,9,10‐tetramethyl‐7,12‐dihydro‐indeno[1,2‐ a ]fluorene resp. the 2,3,8,9‐tetramethyl‐6, 12‐dihydro‐indeno[1,2‐ b ]fluorene are synthesized.