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Two analogs of blestriarene C (4,4'‐dimethoxy‐1,1'‐biphenanthrene‐2,2',7,7'‐tetraol) bearing no 7,7'‐dihydroxy (3) and 4,4'‐dimethoxy groups 4 were prepared. Unlike blestriarene C (1), compounds 3 and 4, as well as 1,1'‐biphenanthrene‐2,2'‐diol (5), do not racemize under fluorescent lamp illumination. Cyclic voltammetry analysis reveals that compound 1 has a lower half‐wave potential (E1/2) than compounds...
Treatment of 1-methoxy-2-nitronaphthalene with 1-naphthyl- and 2-methoxy-1-naphthylmagnesium bromide in diethyl ether-benzene at room temperature provides a facile entry to the corresponding 2-nitro-1,1'-binaphthyls in high yields. Induction of axial chirality into the binaphthyl bond has been achieved by using 1-menthoxy-2-nitronaphthalene as the substrate, giving 2-methoxy-2'-nitro-1,1'-binaphthyl...
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