Multi-step reaction with 11 steps
1.1: 99 percent / Et2Zn / 1,2-dichloro-ethane / -5 - 20 °C
2.1: magnesium; methyl tert-butyl ether / 3 h / Heating
2.2: methyl tert-butyl ether / -20 - 5 °C
3.1: KOt-Bu / tetrahydrofuran / -20 - 20 °C
4.1: 5.48 g / LiI / various solvent(s) / 30 h / 100 °C
5.1: DIEA / CH2Cl2 / -40 °C
6.1: LiBr / dimethylformamide / 16 h / 10 °C
7.1: 99 percent / zinc / dimethylformamide / 10 - 15 °C
8.1: 95 percent / LiHMDS / tetrahydrofuran / 1 h / 20 °C
9.1: BH3 / tetrahydrofuran / 16 h / -10 - 20 °C
9.2: H2O2; NaOH / H2O / 10 - 45 °C
9.3: aq. HF / acetonitrile / 3 h / 20 °C
10.1: DIEA / tetrahydrofuran / 1 h / -20 - 0 °C
11.1: NaHMDS / tetrahydrofuran / 20 °C
With
tert-butyl methyl ether; borane; potassium tert-butylate; diethylzinc; sodium hexamethyldisilazane; magnesium; N-ethyl-N,N-diisopropylamine; lithium bromide; lithium iodide; lithium hexamethyldisilazane; zinc;
In
tetrahydrofuran; dichloromethane; 1,2-dichloro-ethane; N,N-dimethyl-formamide;
DOI:10.1021/jo0157472