Multi-step reaction with 11 steps
1.1: BF3*OEt2 / CH2Cl2
2.1: ethanol / Raney nickel / Heating
3.1: 91 percent / KOH; TsCl / tetrahydrofuran / 20 °C
4.1: Na; naphthalene / tetrahydrofuran / -78 °C
5.1: DMAP; Et3N / CH2Cl2 / 0 °C
6.1: n-BuLi; TMEDA / tetrahydrofuran / -78 °C
6.2: 89 percent / tetrahydrofuran / -78 - 20 °C
7.1: n-BuLi / tetrahydrofuran / -78 °C
7.2: tetrahydrofuran
7.3: BzCl / tetrahydrofuran
8.1: 78 percent / TBAF / tetrahydrofuran / 38 h / Heating
9.1: NaCNBH3 / acetic acid; H2O; acetonitrile
10.1: n-BuLi / tetrahydrofuran; hexane / 0.25 h / -78 °C
10.2: 49 percent / TMSOOTMS / tetrahydrofuran / 15 h / 20 °C
11.1: 86 percent / LiAlH4 / tetrahydrofuran / -78 °C
With
dmap; potassium hydroxide; lithium aluminium tetrahydride; n-butyllithium; naphthalene; ethanol; N,N,N,N,-tetramethylethylenediamine; boron trifluoride diethyl etherate; tetrabutyl ammonium fluoride; sodium; sodium cyanoborohydride; triethylamine; p-toluenesulfonyl chloride;
nickel;
In
tetrahydrofuran; hexane; dichloromethane; water; acetic acid; acetonitrile;
DOI:10.1055/s-2001-17440