Multi-step reaction with 13 steps
1.1: 100 percent / LiHMDS / tetrahydrofuran / 4 h / -78 °C
2.1: 70 percent / imidazole / CH2Cl2 / 2 h / 0 °C
3.1: DIBAl-H / tetrahydrofuran / 2 h / -78 °C
4.1: 11.4 g / pTSA
5.1: 72 percent / MsCl; Et3N; DMAP / CH2Cl2
6.1: 82 percent / H2; NaHCO3 / Pd/C / ethyl acetate
7.1: 70 percent / CuBr2*Me2S; BF3*Et2O / tetrahydrofuran; hexane / -78 - 20 °C
8.1: 60 percent / LiCl; Hunig's base / acetonitrile
9.1: 90 percent / H2 / Pd/C / ethyl acetate
10.1: NaBH4 / methanol / 0 °C
10.2: 40 percent / pTSA / toluene / 5 h / Heating
11.1: 66 percent / LiHMDS / tetrahydrofuran / 1 h / -78 °C
12.1: 62 percent / PCl5 / CH2Cl2 / 0.5 h / -60 °C
13.1: 95 percent / H2 / Pd/C / ethyl acetate
With
1H-imidazole; dmap; sodium tetrahydroborate; copper bromide dimethyl sulfide complex; phosphorus pentachloride; boron trifluoride diethyl etherate; hydrogen; diisobutylaluminium hydride; sodium hydrogencarbonate; toluene-4-sulfonic acid; methanesulfonyl chloride; triethylamine; N-ethyl-N,N-diisopropylamine; lithium chloride; lithium hexamethyldisilazane;
palladium on activated charcoal;
In
tetrahydrofuran; methanol; hexane; dichloromethane; ethyl acetate; acetonitrile;
8.1: Horner-Emmons-Wadsworth reaction;
DOI:10.1021/jo011184i