Wang Zhi-jin
2014
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Journal
Chinese Journal of Synthetic Chemistry
Abstract
The methoxyl group or hexyl group were successfully introduced to 6,6'-position of the BINOL scaffold to get 2,2'-bis( benzyloxy)-6,6'-dimethoxy-1,1'-binaphthalene( 4b) and 2,2'-bis( benzyloxy)-6,6'-dihexyl-1,1'-binaphthalene( 4c) through Ullmann condensation and Kumada coupling,respectively.( 6,6'-Dibromo-1,1'-binaphthyl-2,2'-yl)-phosphoric acids( 6a) was efficiently obtained by a two-step reaction from BINOL.( 6,6'-Dimethoxy-1,1'-binaphthyl-2,2'-yl)-phosphoric acid( 6b) and( 6,6'-dihexyl-1,1'-binaphthyl-2,2'-yl)-phosphoric acid( 6c) were synthesized by deprotection of 4b or 4c then condensation with phosphoryl trichloride. The structures were characterized by1H NMR and31P NMR. 6c was a new compound.