Multi-step reaction with 10 steps
1: sodium chloride / water; dimethyl sulfoxide / 1.7 h / 160 °C
2: toluene-4-sulfonic acid / toluene / 4 h / Reflux
3: lithium aluminium tetrahydride / diethyl ether / 3 h / -20 - 0 °C
4: pyridine / 20 °C / Cooling with ice
5: hydrogenchloride / tetrahydrofuran / 5 h / Reflux
6: tetrahydrofuran / 5.25 h / -78 °C
7: sodium hydride / mineral oil; 1,2-dimethoxyethane / 3 h / Cooling with ice; Reflux
8: N,N-dimethyl-formamide / 100 °C
9: potassium carbonate; water / methanol / 2 h / 20 °C / Cooling with ice
10: dipyridinium dichromate / N,N-dimethyl-formamide / 3.5 h / 40 °C / Cooling with ice
With
pyridine; hydrogenchloride; lithium aluminium tetrahydride; dipyridinium dichromate; water; sodium hydride; potassium carbonate; toluene-4-sulfonic acid; sodium chloride;
In
tetrahydrofuran; methanol; 1,2-dimethoxyethane; diethyl ether; water; dimethyl sulfoxide; N,N-dimethyl-formamide; toluene; mineral oil;