Binaphthylic dication

Dicationic systems in which two diarylmethyl cations are linked by an 1,2-diphenylethyl,414 biphenyl,415 binaphthyl,415 or naphthalene-1,8-diyl416 417 backbone have attracted great interest recently because of their unique electrochromic properties. The dications 200 were prepared from the corresponding diols416,417 [Eq. (3.50)]... 

Among the binaphthyl-systems, Suzuki and co-workers have reported two methods to prepare these dications (eq 21-22).22... 

Optically pure (f )-binaphthylic dienes (63) are electrochemically oxidized to 1,4-dications (64) with the -configuration.190 Since the dications can be electro-... 

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