Multi-step reaction with 13 steps
1.1: 74 percent / d-camphorsulfonic acid / methanol / 18 h / 0 °C
2.1: 96 percent / n-tetrabutylammonium iodide; sodium hydride / dimethylformamide / 2 h / 0 - 20 °C
3.1: 98 percent / zinc triflate / 1,2-dichloro-ethane / 6 h / 50 °C
4.1: 97 percent / N-methylmorpholine / CH2Cl2 / 14 h / 20 °C
5.1: 85 percent / iodomethane; NaHCO3 / acetonitrile; H2O / 28 h / 0 - 20 °C
6.1: 86 percent / samarium(II) iodide; methanol / tetrahydrofuran / 1 h / 0 °C
7.1: 1.31 g / aq. NaOH / ethanol / 2.5 h / 20 °C
8.1: 1.15 g / triphenylphosphine; diethyl azodicarboxylate / tetrahydrofuran; toluene / 2 h
9.1: 2.53 g / DIBAL / CH2Cl2; hexane / 1 h / -78 °C
10.1: n-BuLi / tetrahydrofuran; hexane / 1.5 h / -15 °C
10.2: 3.28 g / tetrahydrofuran; hexane / 18 h / -78 - 20 °C
11.1: 939 mg / N,N-diisopropylethylamine / 1,2-dichloro-ethane / 12 h / 50 °C
12.1: 616 mg / hydrogen / Pd/C / ethanol / 46 h / 20 °C
13.1: 90 percent / dibutyltin oxide; triethylamine / CH2Cl2 / 18 h / 20 °C
With
4-methyl-morpholine; methanol; sodium hydroxide; n-butyllithium; samarium diiodide; (1S)-10-camphorsulfonic acid; hydrogen; tetra-(n-butyl)ammonium iodide; zinc trifluoromethanesulfonate; sodium hydride; diisobutylaluminium hydride; di(n-butyl)tin oxide; sodium hydrogencarbonate; triethylamine; N-ethyl-N,N-diisopropylamine; triphenylphosphine; diethylazodicarboxylate; methyl iodide;
palladium on activated charcoal;
In
tetrahydrofuran; methanol; ethanol; hexane; dichloromethane; water; 1,2-dichloro-ethane; N,N-dimethyl-formamide; toluene; acetonitrile;
4.1: oxy-Michael addition / 8.1: Mitsunobu reaction / 10.2: Wittig reaction;
DOI:10.1021/ol0508126