1.1: 1.28 g / Pd(PPh3)4; aq. K2CO3 / 1,2-dimethoxy-ethane / 19 h / Heating 2.1: 92 percent / TBAF / tetrahydrofuran / 16 h / 25 °C 3.1: 93 percent / diisopropylazodicarboxylate; Ph3P / CH2Cl2 / 4 h / 25 °C 4.1: n-BuLi / hexane; diethyl ether / 0.08 h / -78 °C 4.2: (i-PrO)3B / diethyl ether; hexane / 0.5 h / -78 - 25 °C 4.3: 88 percent / aq. H2O2 / diethyl ether; hexane / 0.25 h / 0 - 25 °C 5.1: 94 percent / i-Pr2NEt / CH2Cl2 / 4 h / 25 °C 6.1: 81 percent / LDA / tetrahydrofuran / 12 h / 25 °C 7.1: 99 percent / aq. HCl / propan-2-ol / 4 h / 25 °C 8.1: 95 percent / K2CO3 / acetonitrile / 4 h / Heating 9.1: 52 percent / BCl3 / CH2Cl2 / 1 h / -78 - 25 °C View Scheme