Chlorodiphenylphosphine → 2,2'-Bis((diphenylphosphaneyl)methyl)-1,1'-binaphthalene

Participants

Reaction Steps

The procedure of Example 7 is repeated, but using an electrolyte comprising 5.58 g (0.010 mol) of 2,2'-bis[(trimethylammonio)methyl]-1,1'-binaphthyl dibromide, 6.62 g (0.030 mol) of chlorodiphenylphosphine and 50 ml of dimethyl formamide (max. 0.1% of water) in the electrolysis. The amount of charge is 0.96 Ah. Workup gives 5.1 g of 2,2'-bis[(diphenylphosphino)methyl]-1,1'-binaphthyl ("naphos"). This corresponds to a yield of 78% based on 2,2'-bis[(trimethylammonio)methyl]-1,1'-binaphthyl dibromide used.

Provenance & Evidence