Multi-step reaction with 13 steps
1.1: 81 percent / DIBAL-H / toluene; hexane / -78 °C
2.1: Mg; I2 / diethyl ether / 1 h / 20 °C
2.2: 87 percent / tetrahydrofuran; diethyl ether / 0.25 h / -78 °C
3.1: 85 percent / Dess-Martin periodinane / CH2Cl2 / 1 h / 20 °C
4.1: DIBAL-H / tetrahydrofuran; hexane / -78 - 0 °C
5.1: 100 percent / DMAP / CH2Cl2 / 3 h / 20 °C
6.1: 82 percent / H2 / Pd/C / methanol; ethyl acetate / 24 h / 20 °C / atmospheric pressure
7.1: 94 percent / Et3N / CH2Cl2 / 1 h / 20 °C
8.1: 99 percent / NaH / tetrahydrofuran / 2 h / 20 °C
9.1: 94 percent / LiAlH4 / diethyl ether / 0.17 h / 0 °C
10.1: 2,6-lutidine / CH2Cl2 / 1 h / 20 °C
11.1: 93 percent / K2CO3; Et3N / dimethylformamide / 24 h / 20 °C
12.1: aq. HCl / tetrahydrofuran / 1 h / 0 °C
13.1: 90 percent / (COCl)2; DMSO / CH2Cl2 / 0.75 h / -78 °C
With
2,6-dimethylpyridine; hydrogenchloride; dmap; lithium aluminium tetrahydride; oxalyl dichloride; hydrogen; iodine; sodium hydride; diisobutylaluminium hydride; potassium carbonate; Dess-Martin periodane; magnesium; dimethyl sulfoxide; triethylamine;
palladium on activated charcoal;
In
tetrahydrofuran; methanol; diethyl ether; hexane; dichloromethane; ethyl acetate; N,N-dimethyl-formamide; toluene;
DOI:10.1021/ol061524s