1: With 2,2'-bis(picolinoyloxy)-(1S)-1,1'-binaphthalene; silver hexafluoroantimonate; copper dichloride in dichloromethane T=-78°C; 3 h; 2: With titanium tetrachloride in dichloromethane T=0°C; 0.5 h; 3: With hydrogenchloride in methanol T=60°C; 12 h; Title compound not separated from byproducts;
