Multi-step reaction with 8 steps
1.1: 1H-imidazole / dichloromethane / 0.5 h / 20 °C
2.1: lithium aluminium tetrahydride / tetrahydrofuran / 0.5 h / 0 °C
3.1: n-butyllithium / hexane; tetrahydrofuran / 2 h / -15 °C
3.2: 1 h / 15 °C
4.1: n-butyllithium; p-toluenesulfonyl chloride / hexane; tetrahydrofuran / 0.25 h / 0 °C
4.2: 0.17 h / 0 °C
5.1: potassium carbonate / acetonitrile / 70 - 80 °C / Inert atmosphere; Reflux
6.1: hydrogen / 5% Pd-C / ethanol / 4 h / 1500.15 Torr
7.1: 2,4,6-tripropyl-1,3,5,2,4,6-trioxatriphosphinane-2,4,6-trioxide / ethyl acetate; acetonitrile / 4.5 h / 20 - 80 °C
8.1: ethyl acetate / 20 °C
With
1H-imidazole; lithium aluminium tetrahydride; n-butyllithium; hydrogen; potassium carbonate; 2,4,6-tripropyl-1,3,5,2,4,6-trioxatriphosphinane-2,4,6-trioxide; p-toluenesulfonyl chloride;
5% Pd-C;
In
tetrahydrofuran; ethanol; hexane; dichloromethane; ethyl acetate; acetonitrile;