Multi-step reaction with 10 steps
1.1: triethylsilane; formic acid / 12 h / 90 °C / Inert atmosphere
1.2: 20 °C / Inert atmosphere
2.1: sodium hydrogencarbonate / methanol / 12 h / 20 °C / Inert atmosphere; Sonication
3.1: Grubbs catalyst first generation / dichloromethane / 12 h / 20 °C / Inert atmosphere
4.1: lithium hydroxide monohydrate / tetrahydrofuran; water / 12 h / 50 °C
4.2: pH 4
5.1: iodine; sodium hydrogencarbonate / acetonitrile / 12 h / -20 - 20 °C / Inert atmosphere
6.1: diisobutylaluminium hydride / dichloromethane; toluene / 1.58 h / -78 °C / Inert atmosphere
6.2: 1 h / -78 - 20 °C / Inert atmosphere
7.1: sodium hydroxide / dichloromethane; water / 1 h / 20 °C / Inert atmosphere
8.1: sodium hexamethyldisilazane / tetrahydrofuran / 0.67 h / 0 - 20 °C / Inert atmosphere
8.2: 16 h / 0 - 20 °C / Inert atmosphere
9.1: 20 % Pd(OH)2/C; hydrogen / ethyl acetate / 2 h / 20 °C / 760.05 Torr
10.1: triphenylphosphine; diethylazodicarboxylate / tetrahydrofuran / 16 h / 0 - 20 °C / Inert atmosphere
With
Grubbs catalyst first generation; triethylsilane; formic acid; lithium hydroxide monohydrate; 20 % Pd(OH)2/C; hydrogen; iodine; sodium hexamethyldisilazane; diisobutylaluminium hydride; sodium hydrogencarbonate; triphenylphosphine; sodium hydroxide; diethylazodicarboxylate;
In
tetrahydrofuran; methanol; dichloromethane; water; ethyl acetate; toluene; acetonitrile;
8.1: Wittig reaction / 8.2: Wittig reaction / 10.1: Mitsunobu reaction;
DOI:10.1021/ol300209s