Multi-step reaction with 12 steps
1.1: 96 percent / NaHMDS / tetrahydrofuran / 0 - 20 °C
2.1: 96 percent / tetrabutylammonium fluoride / tetrahydrofuran / 4 h / 20 °C
3.1: 92 percent / hydrogen / palladium on carbon / methanol / 20 °C
4.1: 89 percent / Dess-Martin periodinane / CH2Cl2 / 2 h / 20 °C
5.1: sec-butylmagnesium chloride / tetrahydrofuran / 0.5 h / 0 °C
5.2: 40 percent / tetrahydrofuran / 0 - 20 °C
6.1: triethylamine / CH2Cl2 / 3 h / 0 - 20 °C
7.1: 45 mg / tetrabutylammonium fluoride / tetrahydrofuran / 20 °C
8.1: 99 percent / Dess-Martin periodinane / CH2Cl2 / 6 h / 20 °C
9.1: 28 mg / 2-methyl-2-butene; sodium chlorite; sodium dihydrogen phosphate monohydrate / 2-methyl-propan-2-ol; H2O; tetrahydrofuran / 6 h / 20 °C
10.1: triethylamine; isobutyl chloroformate / tetrahydrofuran / 0.5 h / -20 °C
10.2: 76 percent / tetrahydrofuran / -20 - 20 °C
11.1: 56 mg / trifluoroacetic acid / CH2Cl2 / 10 h / 20 °C
12.1: 80 percent / ethyldiisopropylamine / dimethylformamide / 18 h / 20 °C
With
sodium chlorite; sodium dihydrogenphosphate; 2-methyl-but-2-ene; tetrabutyl ammonium fluoride; hydrogen; sodium hexamethyldisilazane; Dess-Martin periodane; triethylamine; N-ethyl-N,N-diisopropylamine; trifluoroacetic acid; isobutyl chloroformate;
palladium on activated charcoal;
In
tetrahydrofuran; methanol; dichloromethane; water; N,N-dimethyl-formamide; tert-butyl alcohol;
DOI:10.1021/ol070415q