Multi-step reaction with 10 steps
1.1: POCl3 / 0.5 h / 0 °C
1.2: 53 percent / 4 h / 80 °C
2.1: 52 percent / NaOEt / diethyl ether; ethanol / 2 h / -10 °C
3.1: 83 percent / rhodium(II) acetate dimer / toluene / 5 h / Heating
4.1: NaH / dimethylformamide
4.2: 37 percent / dimethylformamide / 45 h
5.1: 95 percent / LiAlH4 / tetrahydrofuran / 2 h / 20 °C
6.1: NaH / tetrahydrofuran / 0.25 h
6.2: MeI; CS2 / tetrahydrofuran / 18 h
6.3: 79 percent / tri-n-butyltin hydride; 2,2'-azobisisobutyronitrile / toluene / 5 h / 90 °C
7.1: BBr3 / CH2Cl2 / 0.5 h / 0 °C
8.1: 1.67 g / Cs2CO3 / dimethylformamide / 24 h / 20 °C
9.1: CH2Cl2 / 0.08 h / cooling
10.1: 1.31 g / NH3 / CH2Cl2; dioxane / 0.25 h / cooling
With
dirhodium tetraacetate; lithium aluminium tetrahydride; ammonia; sodium ethanolate; boron tribromide; sodium hydride; caesium carbonate; trichlorophosphate;
In
tetrahydrofuran; 1,4-dioxane; diethyl ether; ethanol; dichloromethane; N,N-dimethyl-formamide; toluene;
1.2: Vilsmeier reaction;
DOI:10.1021/jm0401309