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Beilstein J. Org. Chem. 2011, 7, 496–502, doi:10.3762/bjoc.7.58
Graphical Abstract
Scheme 1: Synthesis of 5-aryl-11H-benzo[b]fluorenes via benzannulated enyne–allenes.
Scheme 2: Synthesis of 1,1'-binaphthyl-substituted 11H-benzo[b]fluorene 3c.
Scheme 3: Synthesis of 5-(2-methoxyphenyl)- and 5-[2-(methoxymethyl)phenyl]-11H-benzo[b]fluorene 13a and 13b.
Scheme 4: Synthesis of 5-(1-naphthyl)- and 5-(2-methoxy-1-naphthyl)-11H-benzo[b]fluorene 20a and 20b.
Scheme 5: Synthesis of 5-[2-(methoxymethyl)-1-naphthyl]-11H-benzo[b]fluorene 20c.
Scheme 6: Demethylation of 22b to form 5-(2-hydroxy-1-naphthyl)-11H-benzo[b]fluorene 24.