1: 1,1'-binaphthyl-2,2'-diol With sodium hydride in tetrahydrofuran; mineral oil T=0°C; 1 h; Inert atmosphere; 2: methoxymethoxy chloride in tetrahydrofuran; mineral oil T=0 - 20°C; 4.5 h; Inert atmosphere;

1: (S)-6,6'-dibromo-2,2'-dihydroxy-1,1'-binaphthyl With sodium hydride in tetrahydrofuran; mineral oil T=0°C; 1 h; Inert atmosphere; 2: methoxymethoxy chloride in tetrahydrofuran; mineral oil T=0 - 20°C; 4.5 h; Inert atmosphere;

N-ethyl-N,N-diisopropylamine in N,N-dimethyl-formamide T=0 - 22°C; Inert atmosphere;