Multi-step reaction with 9 steps
1.1: 0.67 g / NaOH / diethyl ether; H2O / 1 h / 20 °C
2.1: n-BuLi / tetrahydrofuran; hexane / 2 h / -78 °C
2.2: 76 percent / HMPA / tetrahydrofuran; hexane / 2.5 h / -78 °C
3.1: 58 percent / Red-Al / diethyl ether; toluene / 4.17 h / 0 - 20 °C
4.1: 92 percent / iPr2NEt / CH2Cl2 / 0 - 20 °C
5.1: 9-BBN-H / tetrahydrofuran / 20 °C
5.2: 73 percent / Pd(PPh3)4; K3PO4 / tetrahydrofuran; dioxane; H2O / 85 °C
6.1: 88 percent / acetic acid / H2O / 5 h / 80 °C
7.1: pyridine / diethyl ether / Heating
8.1: 206 mg / H2O / diethyl ether / 20 °C
9.1: 85 percent / Et3N; 1,3-propanedithiol / methanol / 20 °C
With
pyridine; 1.3-propanedithiol; sodium hydroxide; 9-borabicyclo[3.3.1]nonane dimer; n-butyllithium; water; acetic acid; triethylamine; N-ethyl-N,N-diisopropylamine; sodium bis(2-methoxyethoxy)aluminium dihydride;
In
tetrahydrofuran; methanol; diethyl ether; hexane; dichloromethane; water; toluene;
5.2: Suzuki coupling;
DOI:10.1021/jo050513u