Multi-step reaction with 10 steps
1.1: sodium hydride / tetrahydrofuran; N,N-dimethyl-formamide / 16 h / 0 - 20 °C
2.1: dmap; pyridine / tetrahydrofuran; mineral oil / 16 h / 0 - 20 °C / Inert atmosphere
3.1: sodium hydride / tetrahydrofuran; mineral oil / 0.5 h / 60 °C / Inert atmosphere
3.2: 24 h / 20 °C / Inert atmosphere
4.1: palladium 10% on activated carbon / methanol / 8 h / 20 °C
5.1: dichloromethane / 1 h / 20 °C / Molecular sieve; Inert atmosphere
5.2: 1 h / 20 °C
6.1: pyridine / pyridine / 7 h / 50 °C / Inert atmosphere
7.1: sodium methylate; methanol / 5 h / 20 °C / pH 9 / Inert atmosphere
8.1: dmap; pyridine / 8 h / 80 °C / Inert atmosphere
9.1: sodium hydride / N,N-dimethyl-formamide; mineral oil / 0.5 h / 0 °C / Inert atmosphere
9.2: 5 h / 20 °C / Inert atmosphere
10.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 4 h / 20 °C / Inert atmosphere
With
pyridine; methanol; dmap; palladium 10% on activated carbon; tetrabutyl ammonium fluoride; sodium methylate; sodium hydride;
In
tetrahydrofuran; pyridine; methanol; dichloromethane; N,N-dimethyl-formamide; mineral oil;
DOI:10.1021/jo400095u