1.1: n-BuLi; triisopropyl borate / tetrahydrofuran; hexane / 1 h / -65 °C 1.2: 87 percent / ethanol / 1 h / 45 °C 2.1: AcOH / 1,2-dimethoxy-ethane; H2O / 0.5 h / 20 °C 2.2: 92 percent / [(C6H5)3P]2PdCl2; Na2CO3 / 1.5 h / Heating 3.1: 86 percent / HCl / ethanol; H2O / 1 h / 20 °C View Scheme

1.1: AcOH / 1,2-dimethoxy-ethane; H2O / 0.5 h / 20 °C 1.2: 92 percent / [(C6H5)3P]2PdCl2; Na2CO3 / 1.5 h / Heating 2.1: 86 percent / HCl / ethanol; H2O / 1 h / 20 °C View Scheme