[Rh(rac-BINAP)]BF4 in dichloromethane T=20°C; 3 h;

1: n-BuLi; diisopropylamine / hexane; tetrahydrofuran / 1 h / -10 °C 2: 88 percent / aq. HCl / 24 h / 20 °C 3: 77 percent / [Rh(binap)]BF4 / CH2Cl2 / 3 h / 20 °C View Scheme

1: n-BuLi; diisopropylamine / hexane; tetrahydrofuran / 1 h / -10 °C 2: aq. HCl / 24 h / 20 °C 3: n-BuLi; diisopropylamine / hexane; tetrahydrofuran / 1 h / -10 °C 4: 88 percent / aq. HCl / 24 h / 20 °C 5: 77 percent / [Rh(binap)]BF4 / CH2Cl2 / 3 h / 20 °C View Scheme

1: n-BuLi; diisopropylamine / hexane; tetrahydrofuran / 1 h / -10 °C 2: aq. HCl / 24 h / 20 °C 3: n-BuLi; diisopropylamine / hexane; tetrahydrofuran / 1 h / -10 °C 4: 88 percent / aq. HCl / 24 h / 20 °C 5: 77 percent / [Rh(binap)]BF4 / CH2Cl2 / 3 h / 20 °C View Scheme